Question

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)

Answers

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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