Answer:
y = (x-4)² + 2 or x² -8x + 18
Step-by-step explanation:
vertex (h,k) = (4 , 2) and pass (0 , 18), h = 4 k = 2
parabola equation: y = a(x-h)² + k
pass (0 , 18): 18 = a (0 - 4)² + 2 = 16a + 2
16a = 18-2 = 16
a = 1
equation: y = (x-4)² + 2 or x² -8x + 18
