Question 383070
the general vertex form is ___ y = a(x - h)^2 + k , where (h,k) is the vertex


to find a , plug in the given point ___ 81 = a(1 - -4)^2 + 6


75 = a(5)^2 ___ 3 = a


y = 3(x + 4)^2 + 6


more commonly ___ y = 3x^2 + 24x + 54