20
QuizMultiple Choice
Modeling with Quadratic Equations — Unit test
Question 20 of 25 • AZ-College Prep Math B
Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?
Answer
A
y = 9 (x + one-half) squared minus thirteen-fourths
B
y = 9 (x + one-half) squared minus 1
C
y = 9 (x + one-half) squared + five-fourths
D
y = 9 (x + one-half) squared minus five-fourths