Answer:
see image...
start with Graphing Form: y = a(x-h)²+ k
knowing that h is the x value (negative of it) Â of the vertex , and k is the y value of the vertex
Graphing Form Equation: y =  a(x+3)²+32
you are also given that when the x value is 5 the y value has to be 0
0 = a(4)^2 + 32
a has to be - 1/2 Â Â
 Â
Step-by-step explanation: