Working with real life graphs

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The following graphs gives the shortest braking distances that should be between cars at different speeds.

Ed is driving his car at 60km per hour in poor weather. What should the shortest distance he should be from the car in front?

Fay is driving in good weather at 90km/hr. What is the shortest distance that she should be from the car in front?

Mr Shaw is driving 70m behind another car. What is the fastest speed that he should be driving at?

In a fitness test a student runs from the baseline in the gym to the halfway line and back again.

This is called a lap. The results of students A's test are shown. How far is the baseline from the halfway line?

How long did lap 1 take?

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CCSS.8.EE.B.5

How long did lap 2 take?

What is the average speed for lap 1?

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CCSS.8.F.B.4

CCSS.HSF.IF.B.6

What is the average speed for lap 2?

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CCSS.8.F.B.4

CCSS.HSF.IF.B.6

How does the graph show that the student is running at a constant rate in each lap?

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CCSS.8.EE.B.5