Pearson Algebra 2 Common Core, 2011
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Pearson Algebra 2 Common Core, 2011 View details
3. Rational Functions and Their Graphs
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Exercise 62 Page 523

To determine the inverse, switch x and y and solve for y. A function is a relation where each input is related to exactly one output.

Inverse of the Function: y=6-x
Result: The inverse is a function.

Practice makes perfect
We will begin by finding the inverse of y. First, we need to switch x and y and solve for y. y=6- x → x=6- yThe resulting equation will be the inverse of the given function.
x=6-y
â–Ľ
Solve for y
x-6=-y
-x+6=y
6-x=y
y=6-x
Now that we found the inverse of y, we will determine if it is also a function.

Is the Inverse a Function?

A function is a relation where each input is related to exactly one output. In this case, for each x in domain of the inverse there is only one value of y in the range. Therefore, the inverse is a function in its domain.