What's the equation of the parabola that has its vertex at (4,–1) and a y-intercept at (0,7)? Question 2 options:

A)

y = –1∕2(x + 4)2 – 1

B)

y = 1∕2(x + 4)2 – 1

C)

y = 1∕2(x – 4)2 – 1

D)

y = 1∕2(x – 4)2 + 1