Higher
14th January 1980
- 1Enlarging with Negative Scale Factors3 marks
The point (2, -4) is enlarged by scale factor -3 about the centre (2, 0). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 18 are in A only, 17 in B only, 5 in both and 8 in neither. Work out the probability a random one is in both.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 132 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4Reverse Percentages3 marks
A bill is £96 including VAT at 20%. Work out the amount before VAT.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 5x + 6. 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 January 1980, including the monthly compilation PDF.