Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
11th November 2014
- 1Enlarging with Negative Scale Factors3 marks
The point (2, -4) is enlarged by scale factor -2 about the centre (-1, -1). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 15 are in A only, 7 in B only, 9 in both and 2 in neither. Work out the probability a random one is in both.
- 3Capture Recapture3 marks
30 newts are marked and released. Later 50 are caught, of which 5 are marked. Estimate the population.
- 4Fractional and Negative Indices2 marks
Write 2^-1 as a fraction.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 8. Work out the gradient of any line perpendicular to it.
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