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Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use. NAME ___________________________________________________ DATE _____________________ PERIOD __________ Find the constant rate of change for each linear function and interpret its meaning. 1. Fundraiser Profits Profit ($) 30 45 15 0 60 75 90 Cars Washed 6 4 2 10 8 12 2. Time (seconds) Distance (yards) x y 1.2 6 2.4 8 3.6 10 4.8 12 Find the slope of each line. 3. x y O (0, -2) (1, 2) 4. x y O (3, -1) (0, -3) 5. x y 4 2 6 8 O -4 -6 -8 -4 -6 -8 4 2 (2, -6) (0, 4) Lesson 3 Homework Practice Constant Rate of Change and Slope Find the slope of the line that passes through each pair of points. 6. A(-10, 6), B(-5, 8) 7. C(7, -3), D(11, -4) 8. E(5, 2), F(12, -3) 2 − 5 - 1 − 4 - 5 − 7 9. P(12, 2), Q(18, -2) 10. R(-2, -3), S(-2, -5) 11. T(-13, 8), U(21, 8) - 2 − 3 undefined 0 12. One particularly large ant hill found in 1997 measured 40 inches wide at the base and 18 inches high. What was the slope of the ant hill? 9 − 10 13. Today, the Great Pyramid at Giza near Cairo, Egypt, stands 137 meters tall, coming to a point. Its base is a square with each side measuring 230 meters wide. What is the slope of the pyramid? 137 − 115 $7.50/car; each washed car earns $7.50. 1.67 yd/s; each second, 1.67 yards is traveled. 4 2 − 3 -5 Math Accelerated • Chapter 9 Linear Functions
