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FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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LESSON GOALS • Convert a linear equation in another form to slope-intercept form. • Graph an equation that is written in slope-intercept form. FLORIDA STANDARDS • MAFS.8.EE.2.6 Use similar triangles to explain why the slope m is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equation y = mx for a line through the origin and the equation y = mx + b for a line intercepting the vertical axis at b. PACING One class period, approximately 60 minutes LEARN MATHCAST: CONVERT EQUATIONS TO SLOPE-INTERCEPT FORM This MathCast relates organizing notes of a recipe to writing equations of a line so parts are easy to identify. Students see how to rewrite an equation in standard form in slope-intercept form Then they review the process of graphing a line in slope-intercept form. MATERIALS • Reference Guide pages 121–122 • practice Activity Book pages 95–97 • overview and Toolkit presentations KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • slope • slope-intercept form • standard form of an equation • y-intercept Use this guide to accompany Lesson 3.09, Semester A. Convert Equations to Slope-Intercept Form CoNveRT eqUATIoNS To SLope-INTeRCepT FoRm 169

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