# pre cal

posted by
**jason** on
.

write the standard form equation of the parabola with vertex (-2,-2) that goes through point (-1,0)

y= a (x-b)^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.