Question

Which parent functions have a domain of all real values of x? Select all that apply.

A. Absolute value
B. Linear
C. Reciprocal
D. Quadratic
E. Cube root
F. Cubic

Answer 1

D. Quadratic

Explanation:

The vertex of the parent function y = x2 lies on the origin. It also has a domain of all real numbers and a range of [0, ∞). Observe that this function increases when x is positive and decreases while x is negative