Identify the pair of angles

Which of the following is true for the relation f(x)=2x^2+1

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.

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?