SOLUTION: Someone please could help me with it? Find the inverse function of f(x)= -2x + 4. Tell me if that function is one on one function.

Question 948301: Someone please could help me with it?
Find the inverse function of f(x)= -2x + 4. Tell me if that function is one on one function.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Find the inverse function of f(x)= -2x + 4.
f(x) = y
y = -2x + 4
swap x and y solve for y
-2y + 4 = x
-2y = x - 4
y = x/-2 - 4/-2
The inverse function:

:
It's a one to one function if a horizontal line passes thru the the graph at only one point
:

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