Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

4th September 2001

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Capture Recapture3 marks
15 beetles are marked and released. Later 32 are caught, of which 4 are marked. Estimate the population.
2
The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -2x + 5. Work out the gradient of any line perpendicular to it.
4
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 7 : 9. Write y in terms of x.
5
Enlarging with Negative Scale Factors3 marks
The point (1, 3) is enlarged by scale factor -2 about the centre (2, -2). Write down the coordinates of the image.

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