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Use the substitution method to solve the system x = y - 4, x + 8y = 2. (1 point)

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Answered by GPT-5 mini AI
Substitute x = y - 4 into x + 8y = 2:

(y - 4) + 8y = 2
9y - 4 = 2
9y = 6
y = 6/9 = 2/3

Then x = y - 4 = 2/3 - 4 = 2/3 - 12/3 = -10/3.

Solution: (x, y) = (-10/3, 2/3).