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FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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Use this guide to accompany Lesson 6.07, Semester A. Interpret Linear Function Equations LESSON GOALS • Write the equation of a linear function and determine the rate of change of the function using a point on the line and the slope of the line. • Write the equation of a linear function and determine the rate of change of the function using two points on the line. FLORIDA STANDARDS • MAFS.8.F.2.4 construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (x, y) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values. PACING One class period, approximately 60 minutes LEARN MATHCAST: INTERPRET LINEAR FUNCTION EQUATIONS In this MathCast, the slope and y-intercept of a real-world linear function are interpreted in terms of the context. The slope represents the speed of the elevator in feet/second. The y-intercept is Tariq's height when he started. MATERIALS • reference Guide pages 228–230 • practice Activity Book pages 206–214 • overview and Toolkit presentations KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • initial value • rate of change • slope 302 INTErprET LINEAr FuNcTIoN EquATIoNS

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