Explanation:
using the parabola formula:
y = a(x-h)² + k²
vertex = (h, k)
We are given a parebola equation of: y = x²+9
comparing both equations to get the vertex:
y = y
a = 1
(x-h)² = x²
x² = (x + 0)²
(x-h)² = (x + 0)²
h = 0
+k = +9
k = 9
The vertex of the parabola as (x, y): (0, 9)
1 - (1/4 + 2*1/4)
1 - 3/4
1/4 of the living room still remains unpainted.
D
7•4 =28, -5•0 =0... 28+0=28
