# Lesson 17: Quadratic Inequalities

The lesson begins with using graphs to solve quadratic inequalities. An equation modeling the height of a rocket is graphed along with a second equation that represents the minimum height at which the rocket can legally and safely be exploded. The intersections of the graphs provide the solution interval. A second method is then presented where the inequality is put into standard form and then solved for its $x$-intercepts. Interval notation and union of sets is reviewed before a purely algebraic procedure for solving the inequalities is presented. The lesson concludes with an application problem.

Identifier:
http://www.curriki.org/xwiki/bin/view/Coll_Group_SanDiegoCommunityCollegesDevelopmentalMathExchange/Lesson17QuadraticInequalities?bc=;Coll_Group_SanDiegoCommunityCollegesDevelopmentalMathExchange.IntermediateAlgebra;Coll_Group_SanDiegoCommunityCollegesDev
Rating:
Creator(s):
Bruce Yoshiwara (Pierce College) and Kathy Yoshiwara (Pierce College)
Cataloger:
Bohdan Rhodehamel
Publisher:
Developmental Mathematics Collection
Rights:
CC BY-NC-SA