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May 22, 2015

May 22, 2015

Posted by **jessica** on Tuesday, July 26, 2011 at 4:48pm.

- math -
**Henry**, Wednesday, July 27, 2011 at 5:15pm(-3,0), (2,0).

y = a(x-h)^2 + k.

h = (-3+2) / 2 = -1/2.

y = a(2-(-1/2))^2 + 25,

25a/4 + 25 = 0,

25a + 100 = 0,

25a = -100,

a = -4.

y = -4(x+1/2)^2 + 25 = Vertex form.

y = -4(x^2 + x + 1/4) + 25,

y = -4x^2 - 4x - 1 +25,

y = -4x^2 - 4x + 24,