Question

What is the range of the function y = x^2 ?

A. all real numbers
B. x ≥ 0
C. y ≥ 0

Its not A, I tried that.

Answer 1

The range is all of the y values.

The domain of all quadratics is all real numbers, but the range of y=x^2 is y≥0. This is because quadratic functions graph to form a parabola, which, when the a value is positive, opens upward. The lowest y value when graphed is 0 and all other values are more than that.