Question

The vertex form of the equation of a parabola is x = (y - 4)2 + 27.
What is the standard form of the equation?

A. x = y2 + 8y + 27
B. x = 4y2 - 8y + 43
C. x = y2 - 8y + 43
D. x = y2 + y + 15

Answer 1

@Directrix @robtobey @rebeccaxhawaii @FortyTheRapper

Answer 2

@caozeyuan

Answer 3

you can expand the (y-4)^2

Answer 4

the cheating way of doing it is to note that the square term is y^2, so B is gone

Answer 5

x=ay²+by+c

Answer 6

the linear term is -8y so C

Answer 7

can u explain

Answer 8

The vertex form of the equation of a parabola is y = (x + 3)2 + 53.
What is the standard form of the equation?

A. y = 6x2 + 9x+ 62
B. y = x2 + 6x + 62
C. y = x2 + 3x + 53
D. y = x2 + 53x + 42