The points (6,30) and (2,y) are two points on the graph of a direct variation. Find the missing value. Show work plz!! Will award brainliest

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.