8x + 8y = -48
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Plug in -8 for x
(8) (-8) + 8y = -48
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Simplify
(8) (−8) + 8y = −48
−64 + 8y = −48
8y − 64 = −48
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Add 64 to each side
8y − 64 + 64 = −48 + 64
8y = 16
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Finally, divide each side by 8
8y ÷ 8 = 16 ÷ 8
y = 2
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y = 2 is your answer