Higher Plus
18th October 1984
- 1Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 5, y = 48. Work out y when x = 4.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = p. P is the point dividing AB in the ratio 2 : 1. Write vector OP in terms of b and p.
- 3Probability Equation Questions3 marks
The probability of winning a game is 1/8. A player expects 3 wins. How many games did they play?
- 4Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 0.5, 1, 2, 3. Which class contains the median?
- 5Surds3 marks
Simplify sqrt(27) + sqrt(3), giving your answer in the form a sqrt(b).
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1984, including the monthly compilation PDF.