The triangle ΔKUB is located at K(−4, 3), U(−1, 6) and B(2, 0). It is rotated 90° counterclockwise about the origin.

What are the coordinates of ΔK' U' B' ?

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.