Daily Practice

Higher

6th March 1987

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

1
Parallel and Perpendicular Lines3 marks
A line has equation y = -4x + 5. Work out the gradient of any line perpendicular to it.
2
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 7, y = 35. Work out y when x = 12.
3
Enlarging with Negative Scale Factors3 marks
The point (-6, 6) is enlarged by scale factor -2 about the centre (2, 3). Write down the coordinates of the image.
4
Venn Diagrams3 marks
In a Venn diagram, 5 are in A only, 10 in B only, 9 in both and 7 in neither. Work out the probability a random one is in both.
5
Capture Recapture2 marks
A capture-recapture estimate is made of the moth population of a meadow. State one assumption the method relies on.

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