What is the inverse function of y equals 8x plus 5?

Answer 1

The inverse function is obtained by interchanging corresponding values of x and y and then transposing the resulting equation to make y the subject.

f(x) = y = 8x + 5 therefore f-1(x) = x = 8y + 5 : 8y = x - 5 : y = (x - 5)/8

The inverse function of y = 8x + 5 is y = (x - 5)/8

Answer 2

y = 8x + 5

The inverse function is to make 'x ='

Hence

y - 5 = 8x

8x = y - 5

x = ( y - 5) / 8 The inverse function.