+36915 Let's look at the vertex form of a parabola
th vertex h, k of this parabola is (-3,0)
a (x-h)^2 +k = y sub in h and k
a (x-(-3))^2 + 0 = y now pick an easy point on the parabola.......like -2,1 and sub it in to find 'a'
a (-2 +3)^2 = 1
a = 1
so: (x+3)^2 = y or x^2 + 6x + 9 = y
+36915 Let's look at the vertex form of a parabola
th vertex h, k of this parabola is (-3,0)
a (x-h)^2 +k = y sub in h and k
a (x-(-3))^2 + 0 = y now pick an easy point on the parabola.......like -2,1 and sub it in to find 'a'
a (-2 +3)^2 = 1
a = 1
so: (x+3)^2 = y or x^2 + 6x + 9 = y
