SOLUTION: find the equation of the parabola with vertical axis, vertex (-1,-1) and passing through (2,2)

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Question 953726: find the equation of the parabola with vertical axis, vertex (-1,-1) and passing through (2,2)
Answer by josgarithmetic(39628) About Me  (Show Source):
You can put this solution on YOUR website!
Standard Form, y=a%28x-h%29%5E2%2Bk.
y-k=a%28x-h%29%5E2
a=%28y-k%29%2F%28x-h%29%5E2

The example gives h=k=-1; and additional point (2,2).
a=%282-%28-1%29%29%2F%282-%28-1%29%29%5E2
a=3%2F%283%5E2%29
a=1%2F3


Put the values in where needed to formulate the equation.

highlight%28y=%281%2F3%29%28x%2B1%29%5E2-1%29