Look at the two graphs provided. Which graph (A or B) do you think correctly displays the information?
For the incorrect graph, list the changes that would need to be made in order for it to correctly represent the data.
Patient temperature over time 4.7
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2pm 3pm 4pm Time (hours) Graph A Practice questions 7.2
1. Niamh saves €2 per day in her savings box for 6 days. (i) Create a table to show how much money Niamh has saved after 6 days. (ii) Draw a graph to show how much money Niamh has saved after 6 days. (iii) Identify the variables in this question.
2. When a fl ower is purchased, it is 2 cm tall. Each day, it grows 3 cm taller. (i) Create a table to show how tall the fl ower will be after 5 days. (ii) Draw a graph to show how tall the fl ower will be after 5 days. (iii) Identify the variables in this question.
3. An ice cube is at a temperature of –8°C. Every two minutes, the temperature increases by 1°C.
(i) What will the temperature be in 8 minutes? (ii) Draw a graph to show this information. (iii) Identify the variables in this question.
4. A baker was putting cakes onto plates. He put 4 cakes on the fi rst plate, 6 cakes on the second plate, 8 cakes on the third plate and 10 cakes on the fourth plate.
(i) If this pattern continues, how many cakes will the baker put on the sixth plate?
(ii) Draw a graph to show this information. (iii) Identify the variables in this question.
5. Raj was baking some gingerbread men. He used two jellies for the eyes and one jelly for the nose. (i) Create a table showing how many jellies Raj would need for 7 gingerbread men. (ii) Draw a graph showing the number of jellies Raj needed for 7 gingerbread men. (iii) How many complete gingerbread men could Raj make if he had 200 jellies?
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Annual sales fi gures
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Graph B
2011
2012
Section A Introducing concepts and building skills