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4.7 PROPORTIONAL RELATIONSHIPS I CAN IDENTIFY PROPORTIONAL RELATIONSHIPS AND FIND CONSTANTS OF PROPORTIONALITY BY USING PROPORTIONS.

Published byJerome Thomas Modified over 8 years ago

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Presentation on theme: "4.7 PROPORTIONAL RELATIONSHIPS I CAN IDENTIFY PROPORTIONAL RELATIONSHIPS AND FIND CONSTANTS OF PROPORTIONALITY BY USING PROPORTIONS."— Presentation transcript:

1 4.7 PROPORTIONAL RELATIONSHIPS I CAN IDENTIFY PROPORTIONAL RELATIONSHIPS AND FIND CONSTANTS OF PROPORTIONALITY BY USING PROPORTIONS.

2 USING A TABLE The table shows Keisha’s distance during a bike- a-thon. Is there a proportional relationship between time and distance? Compare the ratios of distance and time. Are they proportional? Well, if you use cross products… 52=52 so yes!

3 USING A GRAPH The graph show’s the same data. Keisha’s distance over time. What is her speed in miles per hour? Find her distance when the time is 1 hr. If the line passes through (0,0) and (2, 13) then it must go through (1, 6.5) So the speed is 6.5 mph This is the unit rate.

4 CONSTANT OF PROPORTIONALITY Value of the ratio of quantities in a proportional relationship. Equivalent to the unit rate.

5 WRITING AN EQUATION USING CONSTANT OF PROPORTIONALITY

6 ASSIGNMENT ODDS p. 167 #7-19

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