SOLUTION: Find the inverse of the function: y = (3x + 9)/12

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Question 519188: Find the inverse of the function: y = (3x + 9)/12
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Find the inverse of the function: y = %283x+%2B+9%29%2F12
Swap x and y and solve for y
x = %283y+%2B+9%29%2F12
multiply both sides by 12
12x = 3y + 9
12x - 9 = 3y
divide all terms by 3
4x - 3 = y
:
y = 4x - 3 is the inverse