Asked by derekkkk

The solution set of the inequality y(>/) 1/3(x-4)^2+1 includes the points
A. (–1, 1), (4, 0), and (7, –1)
B. (1, 3), (4, 1), and (8, 2)
C. (4, 2), (7, 4), and (8, 8)
D. (–4, 2), (0, 9), and (9, 1)
Answered by oobleck
it's easy to check x=0. That makes y>= 19/3
check the other points in like manner

the vertex is at (4,1) so y will be greater than 1 in all cases
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