Simultaneous Equations - Formative Assessment

Solve:

3x + 2y = 15

7x + 2y = 19

• x = 1, y = -6

• x = -1, y = 6

• x = -1, y = -6

• x = 1, y = 6

Solve:

x + y = 5

x - y = 1

• x = 2, y = 3

• x = 3, y = 2

• x = 3, y = -2

• x = -3, y = 2

Solve:

2x + 5y = 29

x + 5y = 22

• x = -7, y = -3

• x = -7, y = 3

• x = 7, y = 3

• x = 7, y = -3

Solve:

3x - 4y = 26

2x - 4y = 20

• x = -6, y = -2

• x = 6, y = -2

• x = 6, y = 2

• x = -6, y = 2

Solve:

4x - y = 17

7x - y = 32

• x = 5, y = -3

• x = -5, y = -3

• x = -5, y = 3

• x = 5, y = 3

Solve:

3x + 5y = 4

4x - 5y = -18

• x = -2, y = 2

• x = 2, y = 2

• x = -2, y = -2

• x = 2, y = -2

Solve:

2x + 3y = 5

x + 3y = 7

• x = 2, y = 3

• x = -2, y = -3

• x = -2, y = 3

• x = 2, y = -3

Solve:

3x - y = 11

x + y = 5

• x = -4, y = -1

• x = 4, y = -1

• x = -4, y = 1

• x = 4, y = 1

Solve:

5x + y = 9

10x − 7y = −18

• x = 1, y = 4

• x = -1 y = -4

• x = -1, y = 4

• x = 1, y = -4

Solve:

−4x − 2y = 14

−10x + 7y = −25

• x = -1, y = -5

• x = -1, y = 5

• x = 1, y = -5

• x = 1, y = 5