Question

Select all of the following functions that have a range of y ≥ 0.

Absolute value.
Squaring.
Identity.
Cubing.
Square root.

Answer 1

It's only square root

Explanation:

Only square roots have a greater, less than greater or equal to and less or equal to signs. I did just did a test with one of these questions... At first I got it right, but I always double check my answers on here, and I just could of stuck through with my own answer, 'sigh'...

Answer 2

Answers are choice A, choice B, choice E

The identity parent function, f(x) = x, has the range equal to the set of all real numbers. The same can be said about the cubic parent function g(x) = x^3. This is why we can eliminate choice C and choice D. The other answer choices have a range of non-negative numbers. This is assuming we are talking about parent functions (and not shifts or scalings or dilations of them).