The Rally family has 3 types of pets: cats, dogs, and horses. Their total number of pets is 12. The ratio of cats to dogs to horses is 3:1:2. How many of their pets are horses?

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.