Higher
28th June 1988
- 1Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 6. Work out the gradient of any line perpendicular to it.
- 2Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 7. Write y in terms of x.
- 3Enlarging with Negative Scale Factors3 marks
The point (-3, -4) is enlarged by scale factor -1 about the centre (-4, -2). Write down the coordinates of the image.
- 4Venn Diagrams3 marks
In a Venn diagram, 14 are in A only, 4 in B only, 10 in both and 10 in neither. Work out the probability a random one is in both.
- 5Capture Recapture3 marks
15 voles are marked and released. Later 42 are caught, of which 6 are marked. Estimate the population.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of June 1988, including the monthly compilation PDF.