Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
12th December 2008
- 1Enlarging with Negative Scale Factors3 marks
The point (-6, -1) is enlarged by scale factor -2 about the centre (3, -4). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 16 are in A only, 7 in B only, 6 in both and 2 in neither. Work out the probability a random one is in both.
- 3Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
- 4Reverse Percentages3 marks
A bill is £744 including VAT at 20%. Work out the amount before VAT.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 2x + 3. Work out the gradient of any line perpendicular to it.
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