Daily Practice - Higher
23rd April 1993
- 1Enlarging with Negative Scale Factors3 marks
The point (-1, 1) is enlarged by scale factor -1 about the centre (-4, -1). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 11 are in A only, 13 in B only, 3 in both and 3 in neither. Work out the probability a random one is in both.
- 3Capture Recapture2 marks
A capture-recapture estimate is made of the beetle population of a woodland. State one assumption the method relies on.
- 4Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 3x + 9. Work out the gradient of any line perpendicular to it.
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