Higher
9th October 1973
- 1Parallel and Perpendicular Lines3 marks
A line has equation y = -2x + 6. Work out the gradient of any line perpendicular to it.
- 2Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 4. Write y in terms of x.
- 3Enlarging with Negative Scale Factors3 marks
The point (-1, 3) is enlarged by scale factor -2 about the centre (-2, 2). Write down the coordinates of the image.
- 4Venn Diagrams3 marks
In a Venn diagram, 6 are in A only, 11 in B only, 10 in both and 4 in neither. Work out the probability a random one is in both.
- 5Capture Recapture3 marks
30 newts are marked and released. Later 24 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 October 1973, including the monthly compilation PDF.