Higher
13th January 1968
- 1Box Plots2 marks
A box plot has minimum 15, lower quartile 25, median 30, upper quartile 33 and maximum 41. Work out the interquartile range.
- 2Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.1616... as a fraction in its simplest form.
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 4. Work out the gradient of any line perpendicular to it.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 16. Work out y when x = 5.
- 5Enlarging with Negative Scale Factors3 marks
The point (3, 4) is enlarged by scale factor -2 about the centre (0, -4). Write down the coordinates of the image.
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