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1 markInterpreting Function Graphs

CSEC Mathematics · May/June 2004 · Paper 2 · Question 6(a)

The amount a plumber charges for services depends on the time taken to complete the repairs plus a fixed charge. The graph shows the charges in dollars (d) for repairs in terms of the number of minutes (t) taken to complete the repairs.

What was the charge for a plumbing job which took 20 minutes?

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Other parts of this question

  1. 6(b)(i)How many minutes were spent completing repairs that cost $38.00?[2 marks]
  2. 6(b)(ii)How many minutes were spent completing repairs that cost $20.00?[2 marks]
  3. 6(c)What is the amount of the fixed charge?[1 mark]
  4. 6(d)Calculate the gradient of the line.[2 marks]
  5. 6(e)Write down the equation of the line in terms of d and t.[2 marks]
  6. 6(f)Determine the length of time taken to complete a job for which the charge was $78.00.[3 marks]

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