CC3 – Proportional Relationships

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Presentation transcript:

CC3 – Proportional Relationships 10/11/2016

Warm-Up Gina ran 12 laps in 4 minutes. How many laps can Gina run per minute?

Warm-Up Gina ran 12 laps in 4 minutes. How many laps can Gina run per minute? Greg is deciding between buying a two-pack of pencils for $3.99 and a five-pack of pencils for $6.99. Which should he choose? Explain your answer using the unit rate.

Some Definitions Equivalent Ratios: Any two ratios with the same unit rate Proportional Relationship: A set of data is proportional if it has a constant unit rate

Proportional Relationships Laps Ran Minutes Passed 3 1

Proportional Relationships Laps Ran Minutes Passed 3 1 6 2

Proportional Relationships Laps Ran Minutes Passed 3 1 6 2 9

Proportional Relationships Laps Ran Minutes Passed 3 1 6 2 9 12 4 15 5 18 21 7

Proportional Relationships Straight Line Passes through the origin (0,0)

Is it proportional? Miles Hours 50 1 70 2 90 3 110 4

Is it proportional? Miles Hours 30 50 1 70 2 90 3 110 4

Is it proportional? Miles Hours 50 1 70 2 90 3 110 4 NO

Is it proportional? Miles Gallons 40 4 50 5 90 9 100 10

Then graph it!

Then graph it!