Question 5


5.1 Draw the following graphs on the same system of axes: y = − 1


5.2 The following table represents the growth of a certain type of bacteria in a lab.


__ 3 x − 4; y = 4; y = x


Time (min) Bacteria


1 4


2 16


5.2.1 Plot this data on a graph. 5.2.2 What type of graph is this?


5.2.3 Determine the number of bacteria after 10 minutes. Question 6


6.1 Determine the surface area and volume of the following prisms: 6.1.1


(2) 3 64 4 256 5 1 024


(3) (1) (2)


[11] (5)


8 cm 6.1.2 (2)


6 cm


6.2 The diagram below shows a spacing collar for a spindle. It is in the form of a metal cylinder with a cylinder hole drilled through the centre. Use the given dimensions to calculate:


6.2.1 the volume of metal removed by the drill 6.2.2 the volume of metal in the collar.


454 Chapter 17: Programme of Assessment


(3)


(2) [9]


18 cm


11 mm


2 mm 4 mm


15 cm 3 cm


12 cm


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