Higher
23rd April 1987
- 1Parallel and Perpendicular Lines3 marks
A line has equation y = -3x + 7. Work out the gradient of any line perpendicular to it.
- 2Repeated Percentage Change3 marks
A town's population is 25000 and grows by 5% each year. Work out the population after 6 years, to the nearest whole number.
- 3Enlarging with Negative Scale Factors3 marks
The point (0, -6) is enlarged by scale factor -1 about the centre (2, 2). Write down the coordinates of the image.
- 4Venn Diagrams3 marks
In a Venn diagram, 13 are in A only, 5 in B only, 7 in both and 7 in neither. Work out the probability a random one is in both.
- 5Histograms2 marks
A histogram class is 4 units wide and contains 12 values. Work out the frequency density.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1987, including the monthly compilation PDF.