pre cal
posted by jason .
write the standard form equation of the parabola with vertex (2,2) that goes through point (1,0)
y= a (xb)^2 + c
b has to be 2, that gives the shift to the left.
y=a( x+2)^2 + c
when x=2, y=2, that makes c 2
y=a( x+2)^2 2
finally, put the point 1,0 in to find a.
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