Higher
2nd April 1968
- 1Parallel and Perpendicular Lines3 marks
A line has equation y = -5x + 6. Work out the gradient of any line perpendicular to it.
- 2Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 5 : 9. Write y in terms of x.
- 3Enlarging with Negative Scale Factors3 marks
The point (4, 6) is enlarged by scale factor -3 about the centre (4, 3). Write down the coordinates of the image.
- 4Venn Diagrams3 marks
In a Venn diagram, 15 are in A only, 4 in B only, 9 in both and 2 in neither. Work out the probability a random one is in both.
- 5Capture Recapture3 marks
20 newts are marked and released. Later 22 are caught, of which 2 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 April 1968, including the monthly compilation PDF.