Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
29th July 1999
- 1Histograms2 marks
A histogram class is 10 units wide and contains 5 values. Work out the frequency density.
- 2Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 3. Work out the gradient of any line perpendicular to it.
- 4Repeated Percentage Change3 marks
A town's population is 19000 and grows by 5% each year. Work out the population after 4 years, to the nearest whole number.
- 5Enlarging with Negative Scale Factors3 marks
The point (3, -3) is enlarged by scale factor -2 about the centre (-1, 4). Write down the coordinates of the image.
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