Error Analysis, area of parallelogram (See picture below)
Please and thank you.

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Which is a graph of a proportional relationship?

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.