EduSahara™ Assignment
Name : Linear Equation Concepts
Chapter : Linear Equations in One Variable
Grade : SSC Grade VIII
License : Non Commercial Use
Question 1
1.
Which of the following is a linear equation in one variable?
  • (i)
    (
    8
    x
    1
    )
    =
    0
  • (ii)
    (
    3
    x
    +
    7
    y
    +
    7
    )
    =
    0
  • (iii)
    (
    3
    x
    +
    8
    y
    +
    z
    4
    )
    =
    0
  • (iv)
    (
    9
    x
    2
     
    +
    38
    x
    y
    25
    x
    8
    y
    2
     
    2
    y
    +
    6
    )
    =
    0
  • (v)
    (
    5
    x
    2
     
    +
    27
    x
    18
    )
    =
    0
Question 2
2.
Which of the following is a linear equation in two variable?
  • (i)
    (
    30
    x
    2
     
    +
    16
    x
    32
    )
    =
    0
  • (ii)
    (
    5
    x
    +
    9
    )
    =
    0
  • (iii)
    (
    48
    x
    2
     
    +
    84
    x
    y
    56
    x
    18
    y
    2
     
    +
    44
    y
    16
    )
    =
    0
  • (iv)
    (
    x
    +
    9
    y
    +
    6
    )
    =
    0
  • (v)
    (
    2
    x
    5
    y
    7
    z
    2
    )
    =
    0
Question 3
3.
Which of the following is a linear equation in three variable?
  • (i)
    (
    8
    x
    2
     
    +
    56
    x
    y
    +
    16
    x
    +
    48
    y
    2
     
    +
    16
    y
    )
    =
    0
  • (ii)
    (
    9
    x
    +
    y
    3
    )
    =
    0
  • (iii)
    (
    48
    x
    2
     
    +
    14
    x
    1
    )
    =
    0
  • (iv)
    x
    =
    0
  • (v)
    (
    8
    x
    5
    y
    3
    z
    4
    )
    =
    0
Question 4
4.
Which of the following is a linear equation in one variable?
  • (i)
    (
    4
    x
    5
    y
    2
    )
    =
    (
    9
    x
    2
    y
    9
    )
  • (ii)
    (
    3
    x
    8
    )
    =
    (
    9
    x
    6
    )
  • (iii)
    (
    8
    x
    2
     
    49
    x
    y
    25
    x
    6
    y
    2
     
    9
    y
    3
    )
    =
    0
  • (iv)
    (
    28
    x
    2
     
    +
    5
    x
    3
    )
    =
    9
    x
  • (v)
    (
    6
    x
    +
    8
    y
    +
    2
    z
    1
    )
    =
    (
    4
    x
    6
    y
    +
    7
    z
    +
    8
    )
Question 5
5.
Which of the following is a linear equation in two variable?
  • (i)
    (
    3
    x
    +
    7
    )
    =
    (
    8
    x
    +
    9
    )
  • (ii)
    (
    9
    x
    2
    y
    +
    4
    z
    +
    3
    )
    =
    (
    9
    x
    7
    y
    +
    9
    z
    +
    8
    )
  • (iii)
    (
    12
    x
    2
     
    +
    66
    x
    +
    54
    )
    =
    (
    2
    x
    +
    3
    )
  • (iv)
    (
    3
    x
    +
    6
    y
    2
    )
    =
    (
    6
    x
    8
    y
    5
    )
  • (v)
    (
    x
    2
     
    +
    3
    x
    y
    +
    x
    +
    54
    y
    2
     
    24
    y
    +
    2
    )
    =
    0
Question 6
6.
Which of the following is a linear equation in three variable?
  • (i)
    (
    6
    x
    +
    2
    y
    9
    z
    +
    9
    )
    =
    (
    9
    x
    +
    3
    y
    +
    4
    z
    )
  • (ii)
    (
    12
    x
    2
     
    +
    22
    x
    +
    12
    y
    2
     
    +
    14
    y
    6
    )
    =
    0
  • (iii)
    (
    6
    x
    y
    5
    )
    =
    (
    5
    x
    +
    y
    +
    9
    )
  • (iv)
    (
    72
    x
    2
     
    27
    x
    )
    =
    (
    4
    x
    3
    )
  • (v)
    (
    2
    x
    +
    5
    )
    =
    (
    9
    x
    +
    8
    )
Question 7
7.
    • The linear equation
    • (
      5
      x
      1
      )
      =
      (
      2
      x
      +
      1
      )
    • is equivalent to
  • (i)
    (
    7
    x
    2
    )
    =
    0
  • (ii)
    (
    5
    x
    1
    )
    =
    (
    2
    x
    2
    )
  • (iii)
    (
    5
    x
    1
    )
    =
    (
    2
    x
    +
    3
    )
  • (iv)
    (
    8
    x
    2
    )
    =
    0
  • (v)
    (
    6
    x
    2
    )
    =
    0
Question 8
8.
    • The linear equation
    • (
      2
      x
      3
      y
      5
      )
      =
      (
      x
      +
      2
      y
      +
      7
      )
    • is equivalent to
  • (i)
    (
    2
    x
    3
    y
    5
    )
    =
    (
    x
    +
    7
    )
  • (ii)
    (
    4
    x
    5
    y
    12
    )
    =
    0
  • (iii)
    (
    3
    x
    5
    y
    12
    )
    =
    0
  • (iv)
    (
    2
    x
    5
    y
    12
    )
    =
    0
  • (v)
    (
    2
    x
    3
    y
    5
    )
    =
    (
    x
    +
    4
    y
    +
    7
    )
Question 9
9.
    • The linear equation
    • (
      x
      +
      2
      y
      9
      z
      7
      )
      =
      (
      7
      x
      +
      5
      y
      +
      z
      5
      )
    • is equivalent to
  • (i)
    (
    x
    +
    2
    y
    9
    z
    7
    )
    =
    (
    7
    x
    +
    8
    y
    +
    z
    5
    )
  • (ii)
    (
    x
    +
    2
    y
    9
    z
    7
    )
    =
    (
    7
    x
    +
    3
    y
    +
    z
    5
    )
  • (iii)
    (
    9
    x
    3
    y
    10
    z
    2
    )
    =
    0
  • (iv)
    (
    7
    x
    3
    y
    10
    z
    2
    )
    =
    0
  • (v)
    (
    8
    x
    3
    y
    10
    z
    2
    )
    =
    0
Question 10
10.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      8
      x
      +
      1
      )
      =
      (
      7
      x
      7
      )
    • is
  • (i)
    x
    =
    7
  • (ii)
    x
    =
    8
  • (iii)
    x
    =
    10
  • (iv)
    x
    =
    9
  • (v)
    x
    =
    6
Question 11
11.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      3
      x
      +
      4
      y
      8
      )
      =
      (
      8
      x
      +
      9
      y
      +
      8
      )
    • is
  • (i)
    x
    =
    (
    5

    9
    y
    +
    16

    11
    )
  • (ii)
    x
    =
    (
    5

    11
    y
    +
    14

    11
    )
  • (iii)
    x
    =
    (
    5

    11
    y
    +
    18

    11
    )
  • (iv)
    x
    =
    (
    5

    13
    y
    +
    16

    11
    )
  • (v)
    x
    =
    (
    5

    11
    y
    +
    16

    11
    )
Question 12
12.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      3
      x
      6
      y
      9
      )
      =
      (
      2
      x
      +
      6
      y
      +
      1
      )
    • is
  • (i)
    y
    =
    (
    5

    12
    x
    7

    6
    )
  • (ii)
    y
    =
    (
    1

    2
    x
    5

    6
    )
  • (iii)
    y
    =
    (
    5

    14
    x
    5

    6
    )
  • (iv)
    y
    =
    (
    5

    12
    x
    1

    2
    )
  • (v)
    y
    =
    (
    5

    12
    x
    5

    6
    )
Question 13
13.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      7
      x
      3
      y
      9
      z
      9
      )
      =
      (
      4
      x
      7
      y
      +
      6
      z
      2
      )
    • is
  • (i)
    x
    =
    (
    4

    3
    y
    5
    z
    7

    3
    )
  • (ii)
    x
    =
    (
    4

    3
    y
    2
    z
    7

    3
    )
  • (iii)
    x
    =
    (
    4

    3
    y
    8
    z
    7

    3
    )
  • (iv)
    x
    =
    (
    2
    y
    5
    z
    7

    3
    )
  • (v)
    x
    =
    (
    6

    5
    y
    5
    z
    7

    3
    )
Question 14
14.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      3
      x
      +
      3
      y
      8
      z
      +
      7
      )
      =
      (
      3
      x
      9
      y
      3
      z
      6
      )
    • is
  • (i)
    y
    =
    (
    1

    2
    x
    +
    1

    4
    z
    13

    12
    )
  • (ii)
    y
    =
    (
    1

    2
    x
    +
    7

    12
    z
    13

    12
    )
  • (iii)
    y
    =
    (
    x
    +
    5

    12
    z
    13

    12
    )
  • (iv)
    y
    =
    (
    1

    4
    x
    +
    5

    12
    z
    13

    12
    )
  • (v)
    y
    =
    (
    1

    2
    x
    +
    5

    12
    z
    13

    12
    )
Question 15
15.
    • The value of
    • z
    • in terms of other variables and constant in
    • (
      7
      x
      +
      2
      y
      2
      z
      +
      5
      )
      =
      (
      9
      x
      3
      y
      +
      8
      z
      +
      7
      )
    • is
  • (i)
    z
    =
    (
    10

    7
    x
    +
    1

    2
    y
    1

    5
    )
  • (ii)
    z
    =
    (
    8

    5
    x
    1

    2
    y
    1

    5
    )
  • (iii)
    z
    =
    (
    8

    5
    x
    +
    1

    2
    y
    1

    5
    )
  • (iv)
    z
    =
    (
    8

    5
    x
    +
    3

    2
    y
    1

    5
    )
  • (v)
    z
    =
    (
    2
    x
    +
    1

    2
    y
    1

    5
    )
Question 16
16.
Which of the following is a linear equation in one variable?
  • (i)
    (
    45
    x
    2
     
    +
    44
    x
    +
    12
    )
    =
    0
  • (ii)
    (
    8
    x
    3
    y
    +
    1
    )
    =
    0
  • (iii)
    (
    x
    +
    3
    )
    =
    0
  • (iv)
    (
    5
    x
    2
     
    +
    7
    x
    y
    +
    41
    x
    24
    y
    2
     
    61
    y
    +
    8
    )
    =
    0
  • (v)
    (
    7
    x
    +
    8
    y
    +
    7
    z
    +
    5
    )
    =
    0
Question 17
17.
Which of the following is a linear equation in two variable?
  • (i)
    (
    4
    x
    y
    +
    7
    )
    =
    0
  • (ii)
    (
    x
    +
    6
    y
    +
    6
    z
    4
    )
    =
    0
  • (iii)
    (
    3
    x
    +
    4
    )
    =
    0
  • (iv)
    (
    8
    x
    2
     
    +
    x
    +
    7
    )
    =
    0
  • (v)
    (
    42
    x
    2
     
    +
    57
    x
    y
    71
    x
    +
    9
    y
    2
     
    +
    49
    y
    30
    )
    =
    0
Question 18
18.
Which of the following is a linear equation in three variable?
  • (i)
    (
    21
    x
    2
     
    43
    x
    y
    +
    8
    x
    +
    14
    y
    2
     
    18
    y
    +
    4
    )
    =
    0
  • (ii)
    (
    30
    x
    2
     
    +
    54
    x
    +
    24
    )
    =
    0
  • (iii)
    (
    5
    x
    6
    )
    =
    0
  • (iv)
    (
    6
    x
    +
    4
    y
    +
    7
    z
    4
    )
    =
    0
  • (v)
    (
    8
    x
    +
    6
    y
    9
    )
    =
    0
Question 19
19.
Which of the following is a linear equation in one variable?
  • (i)
    (
    x
    +
    8
    y
    +
    8
    z
    +
    4
    )
    =
    (
    2
    x
    +
    2
    y
    +
    3
    z
    2
    )
  • (ii)
    (
    20
    x
    2
     
    +
    11
    x
    y
    20
    x
    +
    3
    y
    2
     
    4
    y
    )
    =
    0
  • (iii)
    (
    3
    x
    +
    5
    y
    5
    )
    =
    (
    x
    +
    9
    y
    2
    )
  • (iv)
    (
    9
    x
    6
    )
    =
    (
    3
    x
    +
    9
    )
  • (v)
    (
    4
    x
    2
     
    +
    16
    )
    =
    x
Question 20
20.
Which of the following is a linear equation in two variable?
  • (i)
    (
    9
    x
    +
    5
    y
    +
    7
    )
    =
    (
    4
    x
    +
    4
    y
    8
    )
  • (ii)
    (
    6
    x
    8
    y
    +
    9
    z
    8
    )
    =
    (
    2
    x
    5
    y
    +
    z
    +
    4
    )
  • (iii)
    (
    56
    x
    2
     
    11
    x
    15
    )
    =
    (
    6
    x
    +
    8
    )
  • (iv)
    (
    9
    x
    4
    )
    =
    (
    5
    x
    +
    2
    )
  • (v)
    (
    48
    x
    2
     
    48
    x
    y
    +
    68
    x
    +
    12
    y
    2
     
    34
    y
    +
    14
    )
    =
    0
Question 21
21.
Which of the following is a linear equation in three variable?
  • (i)
    (
    81
    x
    2
     
    18
    x
    8
    )
    =
    (
    3
    x
    +
    4
    )
  • (ii)
    (
    2
    x
    4
    y
    +
    7
    )
    =
    (
    8
    x
    +
    8
    y
    +
    9
    )
  • (iii)
    (
    20
    x
    2
     
    2
    x
    y
    7
    x
    +
    48
    y
    2
     
    +
    26
    y
    +
    3
    )
    =
    0
  • (iv)
    (
    2
    x
    +
    3
    y
    2
    z
    1
    )
    =
    (
    2
    x
    +
    4
    y
    +
    8
    z
    +
    9
    )
  • (v)
    (
    7
    x
    4
    )
    =
    (
    3
    x
    +
    5
    )
Question 22
22.
    • The linear equation
    • (
      x
      +
      2
      )
      =
      (
      4
      x
      +
      6
      )
    • is equivalent to
  • (i)
    (
    3
    x
    4
    )
    =
    0
  • (ii)
    (
    4
    x
    4
    )
    =
    0
  • (iii)
    (
    x
    +
    2
    )
    =
    (
    4
    x
    +
    3
    )
  • (iv)
    (
    x
    +
    2
    )
    =
    (
    4
    x
    +
    8
    )
  • (v)
    (
    2
    x
    4
    )
    =
    0
Question 23
23.
    • The linear equation
    • (
      8
      x
      2
      y
      +
      9
      )
      =
      (
      3
      x
      +
      7
      y
      +
      8
      )
    • is equivalent to
  • (i)
    (
    4
    x
    9
    y
    +
    1
    )
    =
    0
  • (ii)
    (
    5
    x
    9
    y
    +
    1
    )
    =
    0
  • (iii)
    (
    8
    x
    2
    y
    +
    9
    )
    =
    (
    3
    x
    +
    4
    y
    +
    8
    )
  • (iv)
    (
    6
    x
    9
    y
    +
    1
    )
    =
    0
  • (v)
    (
    8
    x
    2
    y
    +
    9
    )
    =
    (
    3
    x
    +
    10
    y
    +
    8
    )
Question 24
24.
    • The linear equation
    • (
      7
      x
      +
      6
      y
      +
      9
      z
      7
      )
      =
      (
      2
      x
      2
      y
      +
      4
      z
      +
      3
      )
    • is equivalent to
  • (i)
    (
    4
    x
    +
    8
    y
    +
    5
    z
    10
    )
    =
    0
  • (ii)
    (
    7
    x
    +
    6
    y
    +
    9
    z
    7
    )
    =
    (
    2
    x
    +
    4
    z
    +
    3
    )
  • (iii)
    (
    7
    x
    +
    6
    y
    +
    9
    z
    7
    )
    =
    (
    2
    x
    5
    y
    +
    4
    z
    +
    3
    )
  • (iv)
    (
    6
    x
    +
    8
    y
    +
    5
    z
    10
    )
    =
    0
  • (v)
    (
    5
    x
    +
    8
    y
    +
    5
    z
    10
    )
    =
    0
Question 25
25.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      7
      x
      +
      8
      )
      =
      (
      3
      x
      +
      3
      )
    • is
  • (i)
    x
    =
    1

    2
  • (ii)
    x
    =
    (
    3

    2
    )
  • (iii)
    x
    =
    (
    1

    4
    )
  • (iv)
    x
    =
    (
    1
    )
  • (v)
    x
    =
    (
    1

    2
    )
Question 26
26.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      4
      x
      9
      y
      1
      )
      =
      (
      x
      8
      y
      8
      )
    • is
  • (i)
    x
    =
    (
    y
    7

    3
    )
  • (ii)
    x
    =
    (
    1

    3
    y
    3
    )
  • (iii)
    x
    =
    (
    1

    5
    y
    7

    3
    )
  • (iv)
    x
    =
    (
    1

    3
    y
    7

    3
    )
  • (v)
    x
    =
    (
    1

    3
    y
    5

    3
    )
Question 27
27.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      5
      x
      6
      y
      4
      )
      =
      (
      7
      x
      +
      2
      y
      +
      4
      )
    • is
  • (i)
    y
    =
    (
    2
    x
    1
    )
  • (ii)
    y
    =
    (
    3

    2
    x
    4
    )
  • (iii)
    y
    =
    (
    5

    4
    x
    1
    )
  • (iv)
    y
    =
    (
    3

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

    2
    x
    1
    )
Question 28
28.
    • The value of
    • x
    • in terms of other variables and constant in
    • (
      4
      x
      +
      5
      y
      +
      3
      z
      +
      6
      )
      =
      (
      9
      x
      9
      y
      +
      8
      z
      +
      1
      )
    • is
  • (i)
    x
    =
    (
    14

    5
    y
    +
    z
    1
    )
  • (ii)
    x
    =
    (
    14

    5
    y
    +
    3
    z
    1
    )
  • (iii)
    x
    =
    (
    14

    5
    y
    z
    1
    )
  • (iv)
    x
    =
    (
    10

    3
    y
    +
    z
    1
    )
  • (v)
    x
    =
    (
    18

    7
    y
    +
    z
    1
    )
Question 29
29.
    • The value of
    • y
    • in terms of other variables and constant in
    • (
      4
      x
      +
      6
      y
      3
      z
      +
      3
      )
      =
      (
      7
      x
      4
      y
      +
      9
      z
      7
      )
    • is
  • (i)
    y
    =
    (
    9

    8
    x
    +
    6

    5
    z
    1
    )
  • (ii)
    y
    =
    (
    11

    10
    x
    +
    4

    5
    z
    1
    )
  • (iii)
    y
    =
    (
    11

    10
    x
    +
    8

    5
    z
    1
    )
  • (iv)
    y
    =
    (
    11

    10
    x
    +
    6

    5
    z
    1
    )
  • (v)
    y
    =
    (
    13

    12
    x
    +
    6

    5
    z
    1
    )
Question 30
30.
    • The value of
    • z
    • in terms of other variables and constant in
    • (
      3
      x
      9
      y
      3
      z
      9
      )
      =
      (
      7
      x
      +
      9
      y
      +
      9
      z
      +
      6
      )
    • is
  • (i)
    z
    =
    (
    1

    3
    x
    1

    2
    y
    5

    4
    )
  • (ii)
    z
    =
    (
    x
    3

    2
    y
    5

    4
    )
  • (iii)
    z
    =
    (
    1

    3
    x
    3

    2
    y
    5

    4
    )
  • (iv)
    z
    =
    (
    1

    5
    x
    3

    2
    y
    5

    4
    )
  • (v)
    z
    =
    (
    1

    3
    x
    5

    2
    y
    5

    4
    )
    Assignment Key

  •  1) (i)
  •  2) (iv)
  •  3) (v)
  •  4) (ii)
  •  5) (iv)
  •  6) (i)
  •  7) (i)
  •  8) (iii)
  •  9) (v)
  •  10) (ii)
  •  11) (v)
  •  12) (v)
  •  13) (i)
  •  14) (v)
  •  15) (iii)
  •  16) (iii)
  •  17) (i)
  •  18) (iv)
  •  19) (iv)
  •  20) (i)
  •  21) (iv)
  •  22) (i)
  •  23) (ii)
  •  24) (v)
  •  25) (v)
  •  26) (iv)
  •  27) (v)
  •  28) (i)
  •  29) (iv)
  •  30) (iii)