Daily Practice

Higher

12th February 1985

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Capture Recapture3 marks
45 beetles are marked and released. Later 70 are caught, of which 7 are marked. Estimate the population.
2
Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
3
Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 5. Work out the gradient of any line perpendicular to it.
4
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 5 : 7. Write y in terms of x.
5
Enlarging with Negative Scale Factors3 marks
The point (5, -1) is enlarged by scale factor -3 about the centre (4, 1). Write down the coordinates of the image.

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