# Math 8 Unit 9 Systems Of Equations Review Question Preview (ID: 42521)

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Solving Systems Of Equations.
TEACHERS: click here for quick copy question ID numbers.

**Solve: y = 6x + 19 and 4x + 4y = -8**

a) (-3, -1)

b) (1, -3)

c) (3, 1)

d) (-3, 1)

**Solve: 8x + 8y = -24 and x = -6y - 3**

a) (0, -3)

b) (-3, 0)

c) (3, -3)

d) (-3, -3)

**Solve: y = 240 + 8x and y= 12x**

a) (60, 720)

b) (70, 840)

c) (0, 0)

d) (20, 240)

**How many solutions does this solution have? y = 4x + 12 and 3x - 3y = 18**

a) 0 solutions

b) 1 solution

c) infinite solutions

d) not possible

**How many solutions does this system have? 2x - 3y = -5 and -4x + 6y = 10**

a) 0 solutions

b) 1 solution

c) infinite solutions

d) not possible

**How many solutions does this system have? -10x + 8y = -1 and 5x - 4y = -9**

a) 0 solutions

b) 1 solution

c) infinite solutions

d) not possible

**How would you describe the relationship between ths lines? y = 3x - 19 and y = 3x + 7**

a) parallel

b) perpendicular

c) coincident

d) skew

**How would you describe the relationship between ths lines? y = 2x - 8 and y = -1/2x + 4**

a) parallel

b) perpendicular

c) coincident

d) skew

**Solve: x + y = 12 and -3x + 7y = 14**

a) (7, 5)

b) (7, -5)

c) (5, -7)

d) (-7, 5)

**Solve: x - 7y = -9 and -x + 8y = 10**

a) (-2, -1)

b) (-2, 1)

c) (1, -2)

d) (2, 1)

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