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FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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Use this guide to accompany Lesson 6.13, Semester A. Sketch Function Graphs LESSON GOALS • Sketch the graph of a real-world relationship between two quantities. FLORIDA STANDARDS • MAFS.8.F.2.5 Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally. PACING One class period, approximately 60 minutes MATERIALS • Reference Guide pages 249–252 • practice Activity Book pages 250–258 • Overview and Toolkit presentations KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • constant function • decreasing function • increasing function LEARN MATHCAST: SKETCH FUNCTION GRAPHS In this MathCast, a graph of Joe's activities is sketched. The graph shows his distance from home. The sections of the graph show where he walked, ran, jogged, and waited for the bus. The slopes of the graph parts reflect his speed. SkeTCH FuNCTION GR ApHS 337

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