EduSahara™ Assignment
Name : Simultaneous Equations
Chapter : Linear Equations and Simultaneous Linear Equations
Grade : ICSE Grade IX
License : Non Commercial Use
Question 1
1.
    • Solve
    • (
      16
      x
      y
      40
      )
      =
      0
      (
      x
      5
      y
      42
      )
      =
      0
  • (i)
    (
    2
    ,
    -8
    )
  • (ii)
    (
    5
    ,
    -8
    )
  • (iii)
    (
    3
    ,
    -8
    )
  • (iv)
    (
    2
    ,
    -9
    )
  • (v)
    (
    2
    ,
    -10
    )
Question 2
2.
    • Solve
    • (
      4
      x
      y
      +
      1
      )
      =
      0
      (
      x
      +
      4
      y
      +
      3
      )
      =
      0
  • (i)
    (
    9

    17
    ,
    (
    -11

    15
    )
    )
  • (ii)
    (
    7

    17
    ,
    (
    -11

    17
    )
    )
  • (iii)
    (
    9

    17
    ,
    (
    -13

    17
    )
    )
  • (iv)
    (
    7

    19
    ,
    (
    -11

    17
    )
    )
  • (v)
    (
    7

    19
    ,
    (
    -11

    15
    )
    )
Question 3
3.
    • Solve
    • (
      2
      x
      y
      5
      )
      =
      1
      (
      4
      x
      5
      y
      +
      4
      )
      =
      (
      3
      )
  • (i)
    (
    (
    -49

    8
    )
    ,
    7
    )
  • (ii)
    (
    (
    -35

    6
    )
    ,
    17

    3
    )
  • (iii)
    (
    (
    -35

    6
    )
    ,
    7
    )
  • (iv)
    (
    (
    -49

    8
    )
    ,
    19

    3
    )
  • (v)
    (
    (
    -37

    6
    )
    ,
    19

    3
    )
Question 4
4.
    • Solve
    • (
      5
      x
      +
      y
      +
      1
      )
      =
      (
      3
      x
      5
      y
      )
      (
      4
      x
      +
      y
      +
      3
      )
      =
      (
      3
      x
      +
      4
      y
      4
      )
  • (i)
    (
    (
    -7

    2
    )
    ,
    13

    12
    )
  • (ii)
    (
    (
    -13

    4
    )
    ,
    11

    10
    )
  • (iii)
    (
    (
    -13

    4
    )
    ,
    11

    12
    )
  • (iv)
    (
    (
    -7

    2
    )
    ,
    11

    10
    )
  • (v)
    (
    (
    -15

    4
    )
    ,
    13

    12
    )
Question 5
5.
    • Solve the following pair of equations :
    •  
       
      1

       
       
      x
        +  
       
       
      14

       
       
      y
      =
       
       
      79
    •  
       
      3

       
       
      x
        +  
       
       
      11

       
       
      y
      =
       
       
      82
  • (i)
    (
    1

    9
    ,
    (
    -1

    5
    )
    )
  • (ii)
    (
    1

    9
    ,
    1

    3
    )
  • (iii)
    (
    1

    9
    ,
    1

    5
    )
  • (iv)
    (
    1

    3
    ,
    1

    5
    )
  • (v)
    (
    1

    11
    ,
    1

    5
    )
Question 6
6.
    • Solve the following pair of equations :
    •    
       
       
      4
      x
        +  
       
       
      7

       
       
      y
      =
       
       
      (
      18
      )
    •  
       
      x
        +  
       
       
      1

       
       
      y
      =
       
       
      (
      1
      )
  • (i)
    (
    1
    ,
    (
    -1

    2
    )
    )
  • (ii)
    (
    2
    ,
    (
    -1

    2
    )
    )
  • (iii)
    (
    4
    ,
    (
    -1

    2
    )
    )
  • (iv)
    (
    1
    ,
    1

    2
    )
  • (v)
    (
    1
    ,
    (
    -1

    4
    )
    )
Question 7
7.
    • Solve the following pair of equations :
    •    
       
       
      12

       
       
      x
         
       
       
      5
      y
      =
       
       
      (
      51
      )
    •    
       
       
      5

       
       
      x
        +  
       
       
      y
      =
       
       
      (
      12
      )
  • (i)
    (
    1

    5
    ,
    3
    )
  • (ii)
    (
    1
    ,
    3
    )
  • (iii)
    (
    1

    3
    ,
    2
    )
  • (iv)
    (
    1

    3
    ,
    3
    )
  • (v)
    (
    1

    3
    ,
    0
    )
Question 8
8.
    • Solve the following pair of equations :
    •    
       
       
      7

       
       
      (
      x
      +
      y
      )
        +  
       
       
      3

       
       
      (
      x
      y
      )
      =
       
       
      (
      39
      )
    •    
       
       
      9

       
       
      (
      x
      +
      y
      )
        +  
       
       
      16

       
       
      (
      x
      y
      )
      =
       
       
      47
  • (i)
    (
    17

    146
    ,
    (
    -1

    144
    )
    )
  • (ii)
    (
    19

    144
    ,
    (
    -1

    144
    )
    )
  • (iii)
    (
    17

    144
    ,
    (
    -1

    144
    )
    )
  • (iv)
    (
    17

    144
    ,
    (
    -1

    142
    )
    )
  • (v)
    (
    17

    144
    ,
    (
    -1

    48
    )
    )
Question 9
9.
    • Solve the following pair of equations :
    •    
       
       
      7

       
       
      (
      3
      x
      +
      y
      )
         
       
       
      12

       
       
      (
      3
      x
      y
      )
      =
       
       
      (
      87
      )
    •    
       
       
      11

       
       
      (
      3
      x
      +
      y
      )
         
       
       
      4

       
       
      (
      3
      x
      y
      )
      =
       
       
      (
      3
      )
  • (i)
    (
    (
    -1

    27
    )
    ,
    (
    -2

    7
    )
    )
  • (ii)
    (
    (
    -1

    27
    )
    ,
    (
    -4

    9
    )
    )
  • (iii)
    (
    1

    27
    ,
    (
    -2

    9
    )
    )
  • (iv)
    (
    (
    -1

    29
    )
    ,
    (
    -2

    9
    )
    )
  • (v)
    (
    (
    -1

    27
    )
    ,
    (
    -2

    9
    )
    )
Question 10
10.
    • Solve the following pair of equations :
    •  
       
      3

       
       
      (
      x
      +
      9
      )
         
       
       
      7

       
       
      (
      y
      +
      6
      )
      =
       
       
      47
    •  
       
      5

       
       
      (
      x
      +
      9
      )
         
       
       
      6

       
       
      (
      y
      +
      6
      )
      =
       
       
      33
  • (i)
    (
    1
    ,
    (
    -49

    8
    )
    )
  • (ii)
    (
    (
    -28

    3
    )
    ,
    -1
    )
  • (iii)
    (
    (
    -28

    3
    )
    ,
    (
    -49

    8
    )
    )
  • (iv)
    (
    (
    -28

    3
    )
    ,
    -2
    )
  • (v)
    (
    2
    ,
    (
    -49

    8
    )
    )
Question 11
11.
    • Solve the following pair of equations :
    • (
      14
      x
      +
      6
      y
      )
      =
      (
      26
      x
      y
      )
    • (
      3
      x
      +
      4
      y
      )
      =
      (
      30
      x
      y
      )
  • (i)
    (
    (
    -1

    7
    )
    ,
    (
    -1

    2
    )
    )
  • (ii)
    (
    (
    -1

    9
    )
    ,
    (
    -1

    2
    )
    )
  • (iii)
    (
    (
    -1

    3
    )
    ,
    (
    -1

    2
    )
    )
  • (iv)
    (
    (
    -1

    9
    )
    ,
    1

    2
    )
  • (v)
    (
    (
    -1

    9
    )
    ,
    (
    -1

    4
    )
    )
Question 12
12.
    • Solve the following pair of equations :
    • (
      14
      x
      +
      y
      )

      x
      y
      =
      -93
    • (
      8
      x
      +
      7
      y
      )

      x
      y
      =
      -21
  • (i)
    (
    1

    5
    ,
    1

    7
    )
  • (ii)
    (
    1

    5
    ,
    (
    -1

    9
    )
    )
  • (iii)
    (
    1

    5
    ,
    (
    -1

    7
    )
    )
  • (iv)
    (
    3

    5
    ,
    (
    -1

    7
    )
    )
  • (v)
    (
    1

    7
    ,
    (
    -1

    7
    )
    )
Question 13
13.
    • Solve the following pair of equations :
    •  
       
      5

       
       

      x
        +  
       
       
      10

       
       

      y
      =
      -45
    •  
       
      13

       
       

      x
        +  
       
       
      18

       
       

      y
      =
      -45
  • (i)
    (
    1

    81
    ,
    1

    79
    )
  • (ii)
    (
    1

    81
    ,
    1

    81
    )
  • (iii)
    (
    1

    83
    ,
    1

    81
    )
  • (iv)
    (
    1

    81
    ,
    (
    -1

    81
    )
    )
  • (v)
    (
    1

    27
    ,
    1

    81
    )
    Assignment Key

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