Question

Given the function(x)=5x+4, find its inverse

Answer 1

Make the function, f (x) into y. Then switch the variables y and x and solve for y : (x-4)/5

Answer 2

the inverse is the reflection across the identiy line, the y=x line basically switch x and y and solve for y f(x)=5x+4 y=5x+4 swtich x=5y+4 solve for y x-4=5y (x-4)/5=y finverse=(x-4)/5