OPENER Write a proportion involving the two variables, then solve for the unknown value. 1. 3. 2. 4. Time (minutes) # of pencils produced 1242 1863 40?

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Direct Variation and Proportion

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Presentation transcript:

OPENER Write a proportion involving the two variables, then solve for the unknown value Time (minutes) # of pencils produced ? Time (minutes) Distanced Traveled (miles) ?112.5 Time (minutes) # of Jumps 6? # of Hooks# of Sinkers 85 40? 7245

OPENER - ANSWERS Write a proportion involving the two variables, then solve for the unknown value Time (minutes) # of pencils produced Time (minutes) Distanced Traveled (miles) Time (minutes) # of Jumps # of Hooks# of Sinkers

Using Constant of Proportionality to Solve Proportions CH 2.4

PAGE 100 READ FOR ME PLEASE… 2. How can you determine the constant of proportionality using the values in the table? Time (minutes) Distance traveled by snail (cm) Set up one rate from one value from the time column, and a corresponding value from the distance traveled column. Next, define the quantities that are changing and set up a proportion to find the constant of proportionality. 3. What is the constant of proportionality? 4. Set up a proportion when the snail travels 2 minutes. Work on #5-7 in your groups…5 minutes

PAGE 102 READ FOR ME PLEASE… Read #1 for me please… 1.a. The table shown is a survey of sixth graders who prefer to ride a skateboard or a bicycle. Is the relationship proportional? SkateboardBicycle Work on #1b-e in your groups until the end of class. If you should finish work on your homework.