Handout
Math Open Reference

Math Open Reference: Domain of a Function

For Students 9th - 10th Standards
Resource defines the domain of a function and gives examples of interval notation.
Activity
Help Algebra

Help algebra.com: Polynomial and Rational Inequalities

For Students 9th - 10th
Learn to solve inequalities and how to graph their solutions on a number line. The examples contain quadratics and rational expressions.