Algebra 1 – Solving Inequalities

There is a now-famous rule about switching the inequality sign whenever multiplying or dividing both sides by a negative. But why? In another special video of Yay Math in Studio, we go over the rule, then apply it to solve several inequalities. Then, we go over some expressions that come up in word problems, such as what "at least, at most, no more than" and "no less than" mean with inequality signs. YAY MATH!