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Math 8 Unit 9 Systems Of Equations Review
Test Description: Solving systems of equations
Instructions: Answer all questions to get your test result.
1) Solve: y = 6x + 19 and 4x + 4y = -8
A
(-3, 1)
B
(-3, -1)
C
(3, 1)
D
(1, -3)
2) Solve: 8x + 8y = -24 and x = -6y - 3
A
(-3, -3)
B
(0, -3)
C
(3, -3)
D
(-3, 0)
3) Solve: y = 240 + 8x and y= 12x
A
(0, 0)
B
(20, 240)
C
(60, 720)
D
(70, 840)
4) How many solutions does this solution have? y = 4x + 12 and 3x - 3y = 18
A
not possible
B
0 solutions
C
1 solution
D
infinite solutions
5) How many solutions does this system have? 2x - 3y = -5 and -4x + 6y = 10
A
infinite solutions
B
0 solutions
C
not possible
D
1 solution
6) How many solutions does this system have? -10x + 8y = -1 and 5x - 4y = -9
A
infinite solutions
B
not possible
C
0 solutions
D
1 solution
7) How would you describe the relationship between ths lines? y = 3x - 19 and y = 3x + 7
A
coincident
B
parallel
C
perpendicular
D
skew
8) How would you describe the relationship between ths lines? y = 2x - 8 and y = -1/2x + 4
A
skew
B
coincident
C
parallel
D
perpendicular
9) Solve: x + y = 12 and -3x + 7y = 14
A
(7, -5)
B
(-7, 5)
C
(7, 5)
D
(5, -7)
10) Solve: x - 7y = -9 and -x + 8y = 10
A
(2, 1)
B
(1, -2)
C
(-2, -1)
D
(-2, 1)
*select an answer for all questions
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