Question 1102367
y = a(x – h)^2 + k
y = a(x +7)^2- 9
-4 = a(-10 +7)^2 - 9
-4 = a(-3)^2 - 9
5= a(-3)^2
5= 9a
5/9=a
y = 5/9(x + 7)^2 - 9
oops!
0 = a(-10 +7)^2 - 9
a=1
so
y = (x + 7)^2 - 9
*[illustration graph2.jpg]