If f (x) = 5x-7, then what us the solution to f (x) = 4

Question

Andrew

Mathematics

1 June, 17:24

If f (x) = 5x-7, then what us the solution to f (x) = 4

+3

Answers (1)

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Azaria Galvan · Answer 1

F (x) is function notation, and is still solved similar to a "y=" equation. We want to solve the equation where the equation's solution equals 4. Therefore, solve like a y = equation and find the x-value which gives a 4 for the answer:

4=5x+7

4-7=5x

-3=5x

(-3/5) = x