College Algebra Discussion

MAT110 College Algebra Instructor: Alice Lee

Study Guide – Week 13

 9.2 The Quadratic Formula

 Read eText Section 9.2

 Do MyMathLab Study Plan & Quiz Me

 Key Topics:

 Quadratic formula

 Weekly Discussion Guide

 Example 2: Solve 9𝑥2 + 12𝑥 + 4 = 0

 Example 3: Solve 4𝑥2 = 8𝑥 − 1

 9.5 Graphs of Quadratic Functions

 Read eText Section 9.5

 Do MyMathLab Study Plan & Quiz Me

 Key Topics:

 Quadratic function

 Vertex

 Symmetry of axis

 Parabola

 Weekly Discussion Guide

 Example 1: Graph 𝑓(𝑥) = 𝑥2 − 2

 Example 2: Graph 𝑓(𝑥) = (𝑥 − 2)2

 Example 3: Graph 𝑓(𝑥) = (𝑥 + 3)2 − 2

 Example 4: Graph 𝑓(𝑥) = − 1

2 𝑥2