Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
3rd November 2011
- 1Enlarging with Negative Scale Factors3 marks
The point (-6, 0) is enlarged by scale factor -2 about the centre (-4, -1). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 12 are in A only, 11 in B only, 6 in both and 4 in neither. Work out the probability a random one is in both.
- 3Histograms2 marks
A histogram class is 20 units wide and contains 50 values. Work out the frequency density.
- 4Reverse Percentages3 marks
A bill is £456 including VAT at 20%. Work out the amount before VAT.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = -3x + 4. Work out the gradient of any line perpendicular to it.
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