If you wanted an output of 7 for the rule y = - x + 4, what would you need as an input?

Question

Jaylon Santiago

Mathematics

1 May, 18:14

If you wanted an output of 7 for the rule y = - x + 4, what would you need as an input?

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Answers (1)

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Conor · Answer 1

Y is your output, so y=7. Now you have 7=-x+4. You then would subtract 4 from both sides, leaving you with 3=-x. Then divide - 1 from both sides so you have x=-3. Your answer is - 3.