Daily Practice - Higher
13th June 1994
- 1Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 68 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 2The 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?
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 3x + 1. Work out the gradient of any line perpendicular to it.
- 4Repeated Percentage Change3 marks
A price rises by 15% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
- 5Enlarging with Negative Scale Factors3 marks
The point (1, -5) is enlarged by scale factor -1 about the centre (-1, -2). Write down the coordinates of the image.
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