CPM Homework Help : PC3 Problem 12-119

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Home > PC3 > Chapter Ch12 > Lesson 12.2.2 > Problem 12-119

12-119.

Given $h(x) = \frac { 7 x + 1 } { x - 2 }+ 2$ , write an equation for $h^{−1}(x)$ .

Step 1:

$x=\frac{7y+1}{y-2}+2$

Step 2:

$x-2 =\frac{7y+1}{y-2}$

Step 3:

$(x-2)(y-2)=7y+1$

Step 4:

$xy-2x-2y+4=7y+1$

Step 5:

$xy-9y=2x-3$

Step 6:

$xy-9y=2x-3$

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