CBSE Board Practice

CBSE Grade IX - Linear Equations in two Variables
Question 1
1.
Which of the following is a linear equation in two variable?
  • (
    6
    x
    5
    y
    +
    z
    7
    )
    =
    0
  • (
    14
    x
    2
     
    55
    x
    y
    68
    x
    36
    y
    2
     
    +
    22
    y
    +
    48
    )
    =
    0
  • (
    8
    x
    +
    2
    y
    +
    7
    )
    =
    0
  • (
    16
    x
    2
     
    +
    40
    x
    +
    56
    )
    =
    0
  • (
    9
    x
    8
    )
    =
    0
Question 2
2.
    • Find the equation of the line passing through the points
    • (
      1
      ,
      3
      )
    • and
    • (
      8
      ,
      (
      1
      )
      )
  • (
    5
    x
    7
    y
    +
    25
    )
    =
    0
  • (
    4
    x
    7
    y
    +
    25
    )
    =
    0
  • (
    4
    x
    +
    7
    y
    32
    )
    =
    0
  • (
    4
    x
    +
    7
    y
    29
    )
    =
    0
  • (
    3
    x
    7
    y
    +
    25
    )
    =
    0
Question 3
3.
    • Find the set of points satisfying the equation
    • y
      =
      (
      4

      3
      x
      +
      7
      )
    • (
      (
      2
      )
      ,
      13

      3
      )
    • ,
    • (
      (
      1
      )
      ,
      17

      3
      )
    • ,
    • (
      (
      2
      )
      ,
      5
      )
    • ,
    • (
      1
      ,
      25

      3
      )
    • ,
    • (
      2
      ,
      29

      3
      )
    • (
      (
      2
      )
      ,
      13

      3
      )
    • ,
    • (
      (
      1
      )
      ,
      17

      3
      )
    • ,
    • (
      1
      ,
      6
      )
    • ,
    • (
      1
      ,
      25

      3
      )
    • ,
    • (
      2
      ,
      29

      3
      )
    • (
      (
      2
      )
      ,
      13

      3
      )
    • ,
    • (
      (
      1
      )
      ,
      17

      3
      )
    • ,
    • (
      0
      ,
      7
      )
    • ,
    • (
      1
      ,
      25

      3
      )
    • ,
    • (
      4
      ,
      35

      3
      )
    • (
      (
      2
      )
      ,
      13

      3
      )
    • ,
    • (
      (
      1
      )
      ,
      17

      3
      )
    • ,
    • (
      0
      ,
      7
      )
    • ,
    • (
      0
      ,
      28

      3
      )
    • ,
    • (
      2
      ,
      29

      3
      )
    • (
      (
      2
      )
      ,
      13

      3
      )
    • ,
    • (
      (
      1
      )
      ,
      17

      3
      )
    • ,
    • (
      0
      ,
      7
      )
    • ,
    • (
      1
      ,
      25

      3
      )
    • ,
    • (
      2
      ,
      29

      3
      )
Question 4
4.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        27

        13
        )
      • ,
      • (
        (
        1
        )
        ,
        12

        13
        )
      • ,
      • (
        0
        ,
        (
        3

        13
        )
        )
      • ,
      • (
        1
        ,
        (
        18

        13
        )
        )
      • ,
      • (
        2
        ,
        (
        33

        13
        )
        )
    • ?
  • (
    12
    x
    +
    7
    y
    2
    )
    =
    0
  • x
    =
    5
  • y
    =
    (
    4
    )
  • (
    15
    x
    13
    y
    3
    )
    =
    0
  • x
    =
    (
    15

    13
    y
    +
    125

    13
    )
Question 5
5.
    • Find the set of points satisfying the equation
    • x
      =
      (
      5
      )
    • (
      (
      5
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      0
      )
    • ,
    • (
      (
      5
      )
      ,
      1
      )
    • ,
    • (
      (
      5
      )
      ,
      2
      )
    • (
      (
      5
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      0
      )
    • ,
    • (
      (
      6
      )
      ,
      2
      )
    • ,
    • (
      (
      5
      )
      ,
      2
      )
    • (
      (
      5
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      0
      )
    • ,
    • (
      (
      5
      )
      ,
      1
      )
    • ,
    • (
      (
      3
      )
      ,
      4
      )
    • (
      (
      5
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      4
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      1
      )
    • ,
    • (
      (
      5
      )
      ,
      2
      )
    • (
      (
      5
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      (
      1
      )
      )
    • ,
    • (
      (
      7
      )
      ,
      (
      2
      )
      )
    • ,
    • (
      (
      5
      )
      ,
      1
      )
    • ,
    • (
      (
      5
      )
      ,
      2
      )
Question 6
6.
    • The equation of the line passing through the points
    • (
      5
      ,
      (
      2
      )
      )
    • and
    • (
      7
      ,
      (
      1
      )
      )
    • is
  • (
    6
    x
    +
    7
    y
    35
    )
    =
    0
  • (
    x
    2
    y
    9
    )
    =
    0
  • (
    7
    x
    +
    5
    y
    25
    )
    =
    0
  • (
    2
    x
    5
    y
    +
    25
    )
    =
    0
Question 7
7.
    • The linear equation
    • (
      8
      x
      +
      2
      y
      )
      =
      (
      8
      x
      5
      y
      6
      )
    • is equivalent to
  • (
    17
    x
    +
    7
    y
    +
    6
    )
    =
    0
  • (
    8
    x
    +
    2
    y
    )
    =
    (
    8
    x
    2
    y
    6
    )
  • (
    15
    x
    +
    7
    y
    +
    6
    )
    =
    0
  • (
    8
    x
    +
    2
    y
    )
    =
    (
    8
    x
    8
    y
    6
    )
  • (
    16
    x
    +
    7
    y
    +
    6
    )
    =
    0
Question 8
8.
    • Which of the following equations satisfy the given points
      • (
        (
        2
        )
        ,
        (
        1
        )
        )
      • ,
      • (
        (
        1
        )
        ,
        (
        2
        )
        )
      • ,
      • (
        0
        ,
        (
        3
        )
        )
      • ,
      • (
        1
        ,
        (
        4
        )
        )
      • ,
      • (
        2
        ,
        (
        5
        )
        )
    • ?
  • y
    =
    (
    x
    3
    )
  • x
    =
    (
    8
    )
  • y
    =
    5
  • (
    8
    x
    8
    y
    +
    32
    )
    =
    0
  • x
    =
    (
    y
    13
    )
Question 9
9.
    • Which of the displayed lines represent the equation
    • y
      =
      6
      • line with point
      • O
      • line with point
      • N
      • line with point
      • Q
      • line with point
      • R
      • line with point
      • P
Question 10
10.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      3
      x
      +
      8
      y
      5
      )
      =
      (
      5
      x
      +
      6
      y
      1
      )
    • is
  • y
    =
    4
    x
  • y
    =
    (
    5
    x
    +
    2
    )
  • y
    =
    (
    3
    x
    +
    2
    )
  • y
    =
    (
    4
    x
    +
    4
    )
  • y
    =
    (
    4
    x
    +
    2
    )