Which ratio would be used to find the value of n?

Answer this question only if you know the answer! 30 points and

3x + 4y = 5 x- 3y = -7 solve by substitution

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.