3 years ago

If f(x) = 5x + 4, what is the inverse of f(x)

1 answer:

7 0

Answer:

f^-1(x)= 1/5x - 4

To get the inverse, swap the x and y variables ( f(x) becomes x, x becomes f(x)) and then solve for y again:

x=5f(x)+4
x-4=5f(x)
1/5x=f(x)

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