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Substitution Extravaganza
Test Description: Find the solution for each system of equations using the substitution method.
Instructions: Answer all questions to get your test result.
1) y = -3x - 13 and -4y - x = -3
A
(-5, 2)
B
(5, -2)
C
(5, 2)
D
(-5, -2)
2) x = y + 10 and -4y - 5 = x
A
(3, -7)
B
(7, -3)
C
(-3, 13)
D
(13, -3)
3) y = -1/4 x - 1 and 2x = y + 8
A
(3 1/9, -1 7/9)
B
(1 7/9, 3 1/9)
C
(3 1/9, 2/9)
D
(-1 7/9, 3 1/9)
4) 2x - 40 = 2y and 3y = 48 - 9x
A
(72, 8)
B
(8, -10)
C
(9, -11)
D
(9, 29)
5) 8x + 9 = y and -x + y = 2
A
(7, 1)
B
(1, -1)
C
(-1, 7)
D
(-1, 1)
6) x = 1/2 y - 3 and 5x - 5y = 0
A
(5, 5)
B
(-6, -6)
C
(0, -3)
D
(-1, 3)
7) -2x + y = 10 and x = y - 7
A
(-3, 4)
B
(4, -3)
C
(4, 3)
D
(-3, 3)
8) x + y = 0 and y = 2/5 x + 7
A
(-3, 3)
B
(-2, -2)
C
(-5, 5)
D
(1, -1)
9) 1/3 y + 1 = x and 2x + y = -3
A
(0, -3)
B
(3, 2)
C
(3, 4)
D
(1, -5)
10) -x + 2y = 5 and 4x + 6y = -6
A
(4, -2)
B
(-5, 0)
C
(7, 1)
D
(-3, 1)
*select an answer for all questions
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