Get out your notebooks! You will be able to solve quadratic equations by graphing. You will be able to estimate solutions of quadratic equations by graphing. Today’s Objectives:
4.2 Solving Quadratics with Graphing
Solutions The solutions of a quadratic are called roots of the equation. The roots are the x-intercepts of its graph. Sometimes referred to as zeros because at those points the y is a zero.
Example—2 Solutions
Example
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Example—1 Solution
Example
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Example—None
Estimating Roots Often exact roots (whole numbers) cannot be found by graphing. Estimate the root(s) by stating which two numbers the zero is between.
Estimating
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HOMEWORK Lesson 4.2 Pg. 234 #’s 22-26