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Published byEdith Hamilton Modified over 4 years ago

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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:

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4.2 Solving Quadratics with Graphing

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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.

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Example—2 Solutions

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Example

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You Try!!!

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Example—1 Solution

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Example

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You Try!!!

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Example—None

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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.

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Estimating

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You Try!!!

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HOMEWORK Lesson 4.2 Pg. 234 #’s 22-26

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