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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)

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  1. anonymous
    • 5 years ago
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    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
    • 5 years ago
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    must be a typo on your answers. you have \[2(x-6)\] twice. perhaps one is \[2(x+6)\]?

  3. anonymous
    • 5 years ago
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    yes one is +6

  4. anonymous
    • 5 years ago
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    that is the one!

  5. anonymous
    • 5 years ago
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    f(x)=2x+12

  6. anonymous
    • 5 years ago
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    why do you think it's +12??? when it can be simplified more

  7. anonymous
    • 5 years ago
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    yeah i'm just distributing it. you can have also y=2(x+6)

  8. anonymous
    • 5 years ago
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    yeah i got it

  9. anonymous
    • 5 years ago
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    thank you

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