Daily Practice · Higher

Daily Practice - Higher

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

16th February 1998

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

1
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 76 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 + 9. Work out the gradient of any line perpendicular to it.
4
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
5
Enlarging with Negative Scale Factors3 marks
The point (-4, -6) is enlarged by scale factor -1 about the centre (2, 0). Write down the coordinates of the image.

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