Higher
21st December 1988
- 1Enlarging with Negative Scale Factors3 marks
The point (-5, 4) is enlarged by scale factor -2 about the centre (3, -2). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 17 are in A only, 17 in B only, 12 in both and 8 in neither. Work out the probability a random one is in both.
- 3Cumulative Frequency2 marks
Four classes in order have frequencies 3, 6, 7, 9. Write down the cumulative frequency at the end of the third class.
- 4Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 5x + 3. Work out the gradient of any line perpendicular to it.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1988, including the monthly compilation PDF.