Hi there! Hopefully this helps!
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Answer: 3(-1) - 4(-1) = 1.
We are given that y = 4x and the equation is 3x - y = 1.
We need to evaluate.
3x - y = 1
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3x - 4x = 1.
To make the equation true, x = -1.
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3(-1) - 4(-1) =
-3 minus -4 = 1.