The standard form of the equation of a parabola is y=-2x2 - 8x-13. What is the vertex form of the equation?
A. y = -2(x+2)2 - 13
B. y = -2(x - 2)2 -5
C. y= -2(x - 2)2 - 13
D. y=-2(x+2)2 - 5

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?