Given the system of equations below,explain if (6,-9) is a solution or not.
1 answer:
Answer:
(6,-9) is a solution.
Step-by-step explanation:
Multiply each equation by the value that makes the coefficients of y opposite.
(-1) · (7x+2y) = (-1) · (24)
8x+2y = 30
Simplify.
-7x-2y = -24
8x+2y = 30
x = 6
-7 · x - 2y = -24
-7 · 6 - 2y = -24
-42 - 2y = -24
-2y = 18
y = -9
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