Question

Write the domain and range of this function. Use interval notation when possible, otherwise, use set-builder notation.

Answer 1

Domain: [-2, 2)

Range: [-4, 4)

Explanation:

When using interval notation, it is important to take note at what the endpoint of the function look like. If the endpoint is a hole, then it will be a parenthesis, if it is a solid endpoint, then it is a bracket. Then you can think about what the smallest x value is and the largest x value to find the domain. Then, for the range, find the smallest y value and the largest y value. And just keep in mind that the minimum goes first, and then the maximum.