PLEASE HELP ! MEDAL AND FAN !
Find the x-intercepts of the parabola with vertex of (-2,-8) and y-intercepts of (0,4)

Question

PLEASE HELP ! MEDAL AND FAN !
Find the x-intercepts of the parabola with vertex of (-2,-8) and y-intercepts of (0,4)

mathmale · Answer

Dear Joy to the World:
When you know the vertex of a parabola, the appropriate general equation for parabolas to use is y = a(x-h)^2 + k, where a is a constant and (h,k) is the vertex.  Here you are given the coordinates of the vertex (-2,-8), along with the y-intercept (0,4).  What remains to be found, so that you end up with the specific equation that fits this situation?

mathmale · Answer

I'd be glad to be of help, but to do that I need, want and expect your participation.  Please respond to my paragraph, above.

mathmale · Answer

Let me know, please, if you're leaving your OpenStudy session.  I'll help you further after you've responded to my question.

joftheworld · Answer

http://formula.algebra.com/cgi-bin/plot-formula.mpl?expression=x+=+%28-12+%2B-+sqrt%28+96+%29%29%2F%286%29+&x=0003