Question

Which represents the inverse of the function f(x) = 4x?h(x) = x + 4h(x) = x – 4h(x) = 3/4xh(x) = 1/4x

Answer 1

To find the inverse, swap the x's with y's, the y's with x's, and solve for y.

y = 4x

x = 4y      swapped the x's and y's

x/4 = y     divided both sides by 4

Answer: h(x) = 1/4 x