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How can you show an infinite number of possible answers? Egg salad: $5 per pound 1 pound for $5 3 pounds for $15 20 pounds for $100 In this lesson you will learn to display all the possibilities in a proportional relationship by graphing. Let’sReview Review Let’s Proportional relationships 30 miles every 2 hours 2 pounds cost $6 A Common Let’s Review Mistake Use equal steps for a graph’s scales! (1, 2) 12 11 (2, 5) 8 5 (3, 11) 2 4 1 2 3 Core Lesson Let’s Review Weight (lb.) 2 4 6 Cost ($) 6 12 18 2 pounds for $6 Core Lesson Let’s Review 4 6 Cost ($) 6 12 18 Cost ($) Weight (lb.) 2 Weight (lb.) Core Lesson Let’s Review 30 miles in 2 hours Distance (mi.) 45 miles in 3 hours Time (hr.) In this lesson you have learned to display all the possibilities in a proportional relationship by graphing. Guided Practice Let’s Review Graph the proportional relationship “3 pounds of egg salad for $2.” State in words the proportional relationship shown here. (There are many correct answers!) Distance (ft.) Guided Practice Let’s Review y x Time (min.) Guided Practice Let’s Review Multiple choice: Which graph shows a proportional relationship? A. B. C. D. Extension Let’s Review Activities Graph a proportional relationship with negative quantities, like “a loss of 3 dollars per day.” Discuss why the graph is in the fourth quadrant. Extension Let’s Review Activities Graph a relationship that is not proportional. Discuss why it is not. Side of a Area of the square (in.) square (in.2) 1 2 3 4 Quick Quiz Let’s Review Graph the proportional relationship “15 miles in 3 hours.” State in words the proportional relationship shown here. (There are many correct answers!) Cost ($) Quick Quiz Let’s Review Weight (ounces)