Question

1. The graph of (y + 6)2 = 2(x – 7) is a parabola. Which statement is true?

a. The vertex is (7,-6) and the parabola opens up.
b. The vertex is (7,-6) and the parabola opens right
c. The vertex is (7,-6) and the parabola opens left.

Answer 1

b

Explanation:

Because y is squared, or, actually, because (y + 6) is squared, we know immediately that the graph is horizontal. Because both (y + 6)^2 and (x - 7) are positive, we know that the graph opens to the right. (b) is correct.