Shay: Sure! For example, we have the function “f(x)=5x+10”. You will have to change the “f(x)” into “y” first, which will give you “y=5x+10”. Then, isolate the “x” by moving the “+10” to the other side which makes it “-10” (“y-10=5x”). After that, you will have to divide both sides of the function with 5 to get rid of it, giving you “y-10 all over 5=x”.
Naya: That’s easy!
Shay: Wait, we are not done. There is one last step left. You just have to interchange the “x” to “y” and the “y” to “x”, giving you “x-10 all over 5=y”. Finally, you change the “y” to “f^-1(x)”. The final answer will be “f^-1(x)=x-10 all over 5” and that's it.
Shay: No worries, this is my job as an older brother. You will definitely ace your test!
Naya: That is such a nice and simple topic! I think I will ace my test! Thank you for helping me Shay!