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anonymous

  • one year ago

What is the inverse function of y=3x-8.7

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  1. Vocaloid
    • one year ago
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    "switch" y and x and solve for y so, if the original function is y = 3x - 8.7, you switch y and x to get x = 3y - 8.7 solve again for y

  2. anonymous
    • one year ago
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    To find the inverse, switch the x and y. x = 3y-8 Solve for y. (x+8)/3 = y

  3. anonymous
    • one year ago
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    thats the inverse

  4. anonymous
    • one year ago
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    Can u explain how u solve for y please

  5. Vocaloid
    • one year ago
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    sure, so we have: x = 3y - 8.7 what do you get when you add 8.7 to both sides?

  6. anonymous
    • one year ago
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    ?

  7. Vocaloid
    • one year ago
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    after you add 8.7 to both sides: x + 8.7 = 3y - 8.7 + 8.7 = 3y, are you with me so far?

  8. Vocaloid
    • one year ago
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    all I did was add "+ 8.7" to both sides

  9. anonymous
    • one year ago
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    Okay

  10. Vocaloid
    • one year ago
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    now, divide both sides by 3

  11. anonymous
    • one year ago
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    Okay

  12. anonymous
    • one year ago
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    So its (x+8.7)/3=y

  13. Vocaloid
    • one year ago
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    yup! great job!

  14. anonymous
    • one year ago
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    Cool thanks

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