The vertex of this parabola is at (2,-4). Which of the following could be its equation?
10
HH
-10
4e
(2,-4)
10+
O A. *= 2(y-4)2 + 2
B. y = 2(x - 2)2 + 4
c. x = 2(y + 4)2 + 2
D. y = 2(x - 2)2 - 4

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.