Higher
11th February 1973
- 1Parallel and Perpendicular Lines3 marks
A line has equation y = 3x + 5. Work out the gradient of any line perpendicular to it.
- 2Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 3, y = 24. Work out y when x = 4.
- 3Enlarging with Negative Scale Factors3 marks
The point (-1, -1) is enlarged by scale factor -3 about the centre (0, -2). Write down the coordinates of the image.
- 4Venn Diagrams3 marks
In a Venn diagram, 18 are in A only, 18 in B only, 10 in both and 4 in neither. Work out the probability a random one is in both.
- 5Box Plots2 marks
A box plot has a minimum of 9 and a maximum of 19. Work out the range.
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