Write a problem that could be solved by making a list

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

If u good at math hit me up on insta or sum @basic_jaiden or @ and

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.