Question

Solve 2x - y = -6 if the domain is {-2, -1, 0, 1}.

Answer 1

Domain are the values of x..
To find the values for the range, all you have to do is plug in the values of x to the equation.
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2x - y = -6
y = 2x + 6 (for convenience, use this in substituting the values of x)
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when x=-2
y = 2x + 6
y = 2(-2) + 6
y = -4 + 6
y = ?
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when x=-1
y = 2x + 6
y = 2(-1) + 6
y = -2 + 6
y = ?
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when x=0
y = 2x + 6
y = 2(0) + 6
y = 0 + 6
y = ?
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when x=1
y = 2x + 6
y = 2(1) + 6
y = 2 + 6
y = ?

Answer 2

Thanks so much.