Question

Find the inverse of the function y = 0.4x + 4.

Answer 1

Try to write x in terms of y.

Answer 2

Would x= 4.4-y be right?

Answer 3

Try again?

Answer 4

Okay, so how do I do this. I have no idea, honestly.

Answer 5

y = 0.4x + 4.

subtract 4 on both sides

Answer 6

okay, so I get y-4=0.4x ?

Answer 7

yep

Answer 8

Now divide by 0.4 on both sides.

Answer 9

so... (y-4)/0.4 = x?

Answer 10

yes now replace x with f-1 .You are done!

Answer 11

Woohoo! Thank you so much!!!

Answer 12

yw :)