Why is (3,-5) not a solution to -x+4y=-15
1 answer:
C) It doesn’t satisfy either the top or bottom equations.
When we plug them into the top equation:

Simplify:

Because the statement of -23 = -15 is wrong, the solution pair is wrong for the top equation.
When we plug them into the bottom equation:

Simplify:

9 = -8 is not a valid statement, so the pair doesn't satisfy both of the equations.
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