Daily Practice

Higher

4th January 1988

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

1
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 184 values. What cumulative frequency do you read across from to estimate the lower quartile?
2
Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -3x + 4. Work out the gradient of any line perpendicular to it.
4
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
5
Enlarging with Negative Scale Factors3 marks
The point (5, -6) is enlarged by scale factor -3 about the centre (4, -1). Write down the coordinates of the image.

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