The standard form of the equation of a parabola is x = y2 - 4y + 20.
what is the vertex form of the equation?

a. x = (y - 4)2 + 4
b. x = (y - 2)2 + 16
c. x = (y - 2)2 + 4
d. x = (y - 4)2 + 12

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.