Which of the following equations represents a quadratic function?

a. x=y^2-2y+4

b. y=3x^2-5x+9

c. y=-2x^2+16√x-64

d. -5x+3y=-4

Sketch one cycle if the cosine function y=2cos2theta

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

Carly stated, “all pairs of rectangles are dilations.” which pair of rectangles would prove that carly’s statement is incorrect?