EduSahara™ Assignment
Name : Linear Equations Concepts
Chapter : Linear Equations in two Variables
Grade : CBSE Grade IX
License : Non Commercial Use
Question 1
1.
Which of the following is a linear equation in two variable?
  • (i)
    (
    54
    x
    2
     
    +
    63
    x
    9
    )
    =
    0
  • (ii)
    (
    4
    x
    2
    y
    +
    2
    z
    4
    )
    =
    0
  • (iii)
    (
    3
    x
    2
    y
    +
    3
    )
    =
    0
  • (iv)
    (
    3
    x
    +
    3
    )
    =
    0
  • (v)
    (
    40
    x
    2
     
    +
    93
    x
    y
    87
    x
    54
    y
    2
     
    +
    99
    y
    27
    )
    =
    0
Question 2
2.
Which of the following is a linear equation in two variable?
  • (i)
    (
    3
    x
    6
    )
    =
    (
    x
    +
    8
    )
  • (ii)
    (
    8
    x
    2
     
    49
    x
    y
    +
    14
    x
    6
    y
    2
     
    10
    y
    +
    4
    )
    =
    0
  • (iii)
    (
    24
    x
    2
     
    60
    x
    36
    )
    =
    (
    2
    x
    +
    5
    )
  • (iv)
    (
    3
    x
    +
    y
    2
    z
    4
    )
    =
    (
    x
    +
    4
    y
    +
    9
    z
    +
    2
    )
  • (v)
    (
    8
    x
    +
    4
    y
    +
    2
    )
    =
    (
    5
    x
    8
    y
    +
    9
    )
Question 3
3.
    • The linear equation
    • (
      7
      x
      9
      y
      +
      9
      )
      =
      (
      3
      x
      3
      y
      1
      )
    • is equivalent to
  • (i)
    (
    3
    x
    6
    y
    +
    10
    )
    =
    0
  • (ii)
    (
    7
    x
    9
    y
    +
    9
    )
    =
    (
    3
    x
    1
    )
  • (iii)
    (
    4
    x
    6
    y
    +
    10
    )
    =
    0
  • (iv)
    (
    7
    x
    9
    y
    +
    9
    )
    =
    (
    3
    x
    5
    y
    1
    )
  • (v)
    (
    5
    x
    6
    y
    +
    10
    )
    =
    0
Question 4
4.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      9
      x
      +
      6
      y
      +
      4
      )
      =
      (
      3
      x
      6
      y
      5
      )
    • is
  • (i)
    x
    =
    (
    y
    +
    1

    4
    )
  • (ii)
    x
    =
    3

    4
  • (iii)
    x
    =
    (
    y
    +
    3

    4
    )
  • (iv)
    x
    =
    (
    y
    +
    5

    4
    )
  • (v)
    x
    =
    (
    2
    y
    +
    3

    4
    )
Question 5
5.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      6
      x
      7
      y
      8
      )
      =
      (
      3
      x
      +
      7
      y
      4
      )
    • is
  • (i)
    y
    =
    3

    14
    x
  • (ii)
    y
    =
    (
    1

    4
    x
    2

    7
    )
  • (iii)
    y
    =
    (
    3

    14
    x
    2

    7
    )
  • (iv)
    y
    =
    (
    3

    16
    x
    2

    7
    )
  • (v)
    y
    =
    (
    3

    14
    x
    4

    7
    )
Question 6
6.
    • Find the set of points satisfying the equation
    • (
      9
      x
      6
      y
      63
      )
      =
      0
  • (i)
    • (
      (
      2
      )
      ,
      (
      15

      2
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      1
      ,
      (
      23

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      12
      )
      )
    • ,
    • (
      2
      ,
      (
      27

      2
      )
      )
  • (ii)
    • (
      (
      2
      )
      ,
      (
      15

      2
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      0
      ,
      (
      21

      2
      )
      )
    • ,
    • (
      0
      ,
      (
      11
      )
      )
    • ,
    • (
      2
      ,
      (
      27

      2
      )
      )
  • (iii)
    • (
      (
      2
      )
      ,
      (
      15

      2
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      0
      ,
      (
      21

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      12
      )
      )
    • ,
    • (
      4
      ,
      (
      23

      2
      )
      )
  • (iv)
    • (
      (
      2
      )
      ,
      (
      15

      2
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      25

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      12
      )
      )
    • ,
    • (
      2
      ,
      (
      27

      2
      )
      )
  • (v)
    • (
      (
      2
      )
      ,
      (
      15

      2
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      0
      ,
      (
      21

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      12
      )
      )
    • ,
    • (
      2
      ,
      (
      27

      2
      )
      )
Question 7
7.
    • Find the set of points satisfying the equation
    • y
      =
      (
      9

      2
      x
      +
      65

      2
      )
  • (i)
    • (
      (
      2
      )
      ,
      47

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      28
      )
    • ,
    • (
      0
      ,
      65

      2
      )
    • ,
    • (
      1
      ,
      37
      )
    • ,
    • (
      4
      ,
      87

      2
      )
  • (ii)
    • (
      (
      2
      )
      ,
      47

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      28
      )
    • ,
    • (
      0
      ,
      65

      2
      )
    • ,
    • (
      1
      ,
      37
      )
    • ,
    • (
      2
      ,
      83

      2
      )
  • (iii)
    • (
      (
      2
      )
      ,
      47

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      28
      )
    • ,
    • (
      0
      ,
      65

      2
      )
    • ,
    • (
      0
      ,
      38
      )
    • ,
    • (
      2
      ,
      83

      2
      )
  • (iv)
    • (
      (
      2
      )
      ,
      47

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      28
      )
    • ,
    • (
      (
      2
      )
      ,
      61

      2
      )
    • ,
    • (
      1
      ,
      37
      )
    • ,
    • (
      2
      ,
      83

      2
      )
  • (v)
    • (
      (
      2
      )
      ,
      47

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      28
      )
    • ,
    • (
      1
      ,
      63

      2
      )
    • ,
    • (
      1
      ,
      37
      )
    • ,
    • (
      2
      ,
      83

      2
      )
Question 8
8.
    • Find the set of points satisfying the equation
    • x
      =
      (
      1

      4
      y
      +
      1

      4
      )
  • (i)
    • (
      (
      2
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      1
      ,
      3
      )
    • ,
    • (
      2
      ,
      7
      )
  • (ii)
    • (
      (
      2
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      1
      ,
      3
      )
    • ,
    • (
      4
      ,
      9
      )
  • (iii)
    • (
      (
      2
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      0
      ,
      4
      )
    • ,
    • (
      2
      ,
      7
      )
  • (iv)
    • (
      (
      2
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      1
      ,
      3
      )
    • ,
    • (
      2
      ,
      7
      )
  • (v)
    • (
      (
      2
      )
      ,
      (
      9
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      1
      ,
      (
      2
      )
      )
    • ,
    • (
      1
      ,
      3
      )
    • ,
    • (
      2
      ,
      7
      )
Question 9
9.
    • Find the set of points satisfying the equation
    • y
      =
      6
      x
  • (i)
    • (
      (
      2
      )
      ,
      (
      12
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      6
      )
      )
    • ,
    • (
      1
      ,
      (
      1
      )
      )
    • ,
    • (
      1
      ,
      6
      )
    • ,
    • (
      2
      ,
      12
      )
  • (ii)
    • (
      (
      2
      )
      ,
      (
      12
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      6
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      1
      ,
      6
      )
    • ,
    • (
      4
      ,
      14
      )
  • (iii)
    • (
      (
      2
      )
      ,
      (
      12
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      6
      )
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      1
      ,
      6
      )
    • ,
    • (
      2
      ,
      12
      )
  • (iv)
    • (
      (
      2
      )
      ,
      (
      12
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      6
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      1
      ,
      6
      )
    • ,
    • (
      2
      ,
      12
      )
  • (v)
    • (
      (
      2
      )
      ,
      (
      12
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      6
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      0
      ,
      7
      )
    • ,
    • (
      2
      ,
      12
      )
Question 10
10.
    • Find the set of points satisfying the equation
    • (
      8
      x
      +
      2
      y
      1
      )
      =
      0
  • (i)
    • (
      (
      2
      )
      ,
      17

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      9

      2
      )
    • ,
    • (
      0
      ,
      1

      2
      )
    • ,
    • (
      1
      ,
      (
      7

      2
      )
      )
    • ,
    • (
      4
      ,
      (
      11

      2
      )
      )
  • (ii)
    • (
      (
      2
      )
      ,
      17

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      9

      2
      )
    • ,
    • (
      1
      ,
      (
      1

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      7

      2
      )
      )
    • ,
    • (
      2
      ,
      (
      15

      2
      )
      )
  • (iii)
    • (
      (
      2
      )
      ,
      17

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      9

      2
      )
    • ,
    • (
      0
      ,
      1

      2
      )
    • ,
    • (
      1
      ,
      (
      7

      2
      )
      )
    • ,
    • (
      2
      ,
      (
      15

      2
      )
      )
  • (iv)
    • (
      (
      2
      )
      ,
      17

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      9

      2
      )
    • ,
    • (
      0
      ,
      1

      2
      )
    • ,
    • (
      0
      ,
      (
      5

      2
      )
      )
    • ,
    • (
      2
      ,
      (
      15

      2
      )
      )
  • (v)
    • (
      (
      2
      )
      ,
      17

      2
      )
    • ,
    • (
      (
      1
      )
      ,
      9

      2
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      3

      2
      )
      )
    • ,
    • (
      1
      ,
      (
      7

      2
      )
      )
    • ,
    • (
      2
      ,
      (
      15

      2
      )
      )
Question 11
11.
    • Find the set of points satisfying the equation
    • y
      =
      (
      3
      )
  • (i)
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      0
      ,
      (
      3
      )
      )
    • ,
    • (
      1
      ,
      (
      3
      )
      )
    • ,
    • (
      4
      ,
      (
      1
      )
      )
  • (ii)
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      0
      ,
      (
      3
      )
      )
    • ,
    • (
      1
      ,
      (
      3
      )
      )
    • ,
    • (
      2
      ,
      (
      3
      )
      )
  • (iii)
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      5
      )
      )
    • ,
    • (
      1
      ,
      (
      3
      )
      )
    • ,
    • (
      2
      ,
      (
      3
      )
      )
  • (iv)
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      0
      ,
      (
      3
      )
      )
    • ,
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      2
      ,
      (
      3
      )
      )
  • (v)
    • (
      (
      2
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      (
      1
      )
      ,
      (
      3
      )
      )
    • ,
    • (
      1
      ,
      (
      4
      )
      )
    • ,
    • (
      1
      ,
      (
      3
      )
      )
    • ,
    • (
      2
      ,
      (
      3
      )
      )
Question 12
12.
    • Find the set of points satisfying the equation
    • x
      =
      0
  • (i)
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      0
      ,
      1
      )
    • ,
    • (
      2
      ,
      4
      )
  • (ii)
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      0
      ,
      1
      )
    • ,
    • (
      0
      ,
      2
      )
  • (iii)
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      1
      ,
      (
      1
      )
      )
    • ,
    • (
      0
      ,
      1
      )
    • ,
    • (
      0
      ,
      2
      )
  • (iv)
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      2
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      1
      )
    • ,
    • (
      0
      ,
      2
      )
  • (v)
    • (
      0
      ,
      (
      2
      )
      )
    • ,
    • (
      0
      ,
      (
      1
      )
      )
    • ,
    • (
      0
      ,
      0
      )
    • ,
    • (
      (
      1
      )
      ,
      2
      )
    • ,
    • (
      0
      ,
      2
      )
Question 13
13.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        (
        17

        8
        )
        )
      • ,
      • (
        (
        1
        )
        ,
        (
        15

        4
        )
        )
      • ,
      • (
        0
        ,
        (
        43

        8
        )
        )
      • ,
      • (
        1
        ,
        (
        7
        )
        )
      • ,
      • (
        2
        ,
        (
        69

        8
        )
        )
    • ?
  • (i)
    x
    =
    (
    9
    )
  • (ii)
    (
    15
    x
    +
    14
    y
    10
    )
    =
    0
  • (iii)
    x
    =
    (
    13

    8
    y
    59

    8
    )
  • (iv)
    (
    13
    x
    8
    y
    43
    )
    =
    0
  • (v)
    y
    =
    (
    13

    8
    x
    125

    8
    )
Question 14
14.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        17
        )
      • ,
      • (
        (
        1
        )
        ,
        16
        )
      • ,
      • (
        0
        ,
        15
        )
      • ,
      • (
        1
        ,
        14
        )
      • ,
      • (
        2
        ,
        13
        )
    • ?
  • (i)
    x
    =
    (
    y
    +
    1
    )
  • (ii)
    (
    6
    x
    6
    y
    +
    24
    )
    =
    0
  • (iii)
    x
    =
    8
  • (iv)
    y
    =
    7
  • (v)
    y
    =
    (
    x
    +
    15
    )
Question 15
15.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        51

        5
        )
      • ,
      • (
        (
        1
        )
        ,
        27

        5
        )
      • ,
      • (
        0
        ,
        3

        5
        )
      • ,
      • (
        1
        ,
        (
        21

        5
        )
        )
      • ,
      • (
        2
        ,
        (
        9
        )
        )
    • ?
  • (i)
    x
    =
    (
    1
    )
  • (ii)
    (
    13
    x
    10
    y
    +
    51
    )
    =
    0
  • (iii)
    (
    24
    x
    +
    5
    y
    3
    )
    =
    0
  • (iv)
    y
    =
    (
    13

    10
    x
    +
    77

    10
    )
  • (v)
    x
    =
    (
    13

    10
    y
    127

    10
    )
Question 16
16.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        2
        )
      • ,
      • (
        (
        1
        )
        ,
        2
        )
      • ,
      • (
        0
        ,
        2
        )
      • ,
      • (
        1
        ,
        2
        )
      • ,
      • (
        2
        ,
        2
        )
    • ?
  • (i)
    x
    =
    1
  • (ii)
    (
    15
    x
    +
    20
    y
    12
    )
    =
    0
  • (iii)
    (
    13
    x
    9
    y
    +
    24
    )
    =
    0
  • (iv)
    x
    =
    (
    13

    9
    y
    17

    9
    )
  • (v)
    y
    =
    2
Question 17
17.
    • Which of the following equations satisfy the given points
      • (
        (
        8
        )
        ,
        (
        2
        )
        )
      • ,
      • (
        (
        8
        )
        ,
        (
        1
        )
        )
      • ,
      • (
        (
        8
        )
        ,
        0
        )
      • ,
      • (
        (
        8
        )
        ,
        1
        )
      • ,
      • (
        (
        8
        )
        ,
        2
        )
    • ?
  • (i)
    (
    11
    x
    13
    y
    +
    27
    )
    =
    0
  • (ii)
    y
    =
    9
  • (iii)
    y
    =
    (
    11

    13
    x
    +
    29

    13
    )
  • (iv)
    x
    =
    (
    8
    )
  • (v)
    x
    =
    (
    11

    13
    y
    203

    13
    )
    Assignment Key

  •  1) (iii)
  •  2) (v)
  •  3) (iii)
  •  4) (iii)
  •  5) (iii)
  •  6) (v)
  •  7) (ii)
  •  8) (i)
  •  9) (iv)
  •  10) (iii)
  •  11) (ii)
  •  12) (ii)
  •  13) (iv)
  •  14) (v)
  •  15) (iii)
  •  16) (v)
  •  17) (iv)