Real World Graphing Lines

A car tyre needs to be at a pressure of 30 psi.

What is this in Bars?

• 3 bars

• 2 bars

• 1 bar

• 0.5 bars

Water is poured into this container at a constant rate until it reaches the dashed line.

Which graph shows the change of the depth, d, of water against time, t.

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This graph shows the change of depth, d, of water against time, t, as a container is filled at a constant rate.

Which of these is the container?

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This graph shows the relationship between the width, w cm, and the length, l cm, of a rectangle with a fixed area.

Write down the width when the length is 5 cm

• 10 cm

• 15 cm

• 6 cm

• 7.5 cm

Work out the fixed area of the rectangle.

• 15 cm²

• 7.5 cm²

• 37.5 cm²

• 25 cm²

Tom cycles to his Grandmother’s house, which is 12km from his home.

He stays there for 45 minutes.

The distance-time graph shows his journey.

Work out the fastest speed that Tom cycles at on his way to his grandmother’s house.

• 16 km/h

• 8 km/h

• 4 km/h

• 12 km/h

This graph shows first class postal rates.

How much does it cost to post a first class letter that has a mass of 300 grams?

• £1.26

• £1.70

• £1.89

• £1.68

What is represented by the gradient of the line?

• Distance

• Speed

• Time

• Change in time

Write down, in words, the units represented by the gradient of the line.

• Metres per minute

• m/m

• Miles per hour

• Metres

A tiler uses the graph of

C = 0.25t + 20

to work out the charge, £C, for a job that involves fixing t tiles

What does the constant term represent?

• Charge per hour

• Time taken to complete the job

• Cost of petrol

• Callout charge