Evaluate the expression 0.5 to a function

Answer question above and explain each step : )

What is the graph of the absolute value equation ? y=|x|-5

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.