SOLUTION: find the inverse (if it exists) of f(x)=5x-4

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Question 417862: find the inverse (if it exists) of f(x)=5x-4
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

y+=+5x+%2B+4
Begin by solving for x:
y+-+4+=+5x+%2B+4+-+4
y+-+4+=+5x
%28y+-+4%29%2F5+=+x
Now interchange x and y:
%28x+-+4%29%2F5+=+y
If you want it to write in the standard form(y+=+mx+%2B+b) then just write it like this:
%281%2F5%29x+-+4%2F5+=+y
so, y+=+%281%2F5%29x+-+4%2F5...is your inverse