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anonymous
 one year ago
What is the inverse of y=9x^2 4
anonymous
 one year ago
What is the inverse of y=9x^2 4

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0First what you want to do replace every x with a y and replace every y with an x so first you have y=9x^24 then you'll have x=9y^24 now get y to be alone to get y alone, first add 4 to both sides so you get x+4 = 9y^2 now you can divide both sides by 9, so y can be alone so you'll have (x+4)/(9) = y^2 now to get rid of the square from the y, take the square root of both sides, so you'll have sqrt(y^2) = sqrt((x+4)/(9)) the square root cancels out the power 2 in the y so you get y = sqrt((x+4)/(9)) which can equal to y=sqrt((x+4))/(3) (since we did the square root of 9 is 3, you dont put a square root over the denominator anymore)

marcelie
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442993444549:dw
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