## anonymous 5 years ago if f(x)=(1/2)x-6. what is the equation for f^-1(x)? ...2x-6 ...2x+6 ...2(x-6) ...2(x-6)

1. anonymous

this one is doable. put $y=\frac{1}{2}x-6$switch x and y $x=\frac{1}{2}y-6$ solve for y $x+6=\frac{1}{2}y$ $2(x+6)=y$

2. anonymous

must be a typo on your answers. you have $2(x-6)$ twice. perhaps one is $2(x+6)$?

3. anonymous

yes one is +6

4. anonymous

that is the one!

5. anonymous

f(x)=2x+12

6. anonymous

why do you think it's +12??? when it can be simplified more

7. anonymous

yeah i'm just distributing it. you can have also y=2(x+6)

8. anonymous

yeah i got it

9. anonymous

thank you

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