What is the domain of the function y = 5x – 2 when the range is {–7, –2, 8}?

Answer 1

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Answer 2

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Answer 3

5x – 2
find the x values that produce the y values: {–7, –2, 8}
5x-2 = -7
x = -1

5x-2 = -2
x = 0

5x-2 = 8
x = 2
so the domain is {-1,0,2}