Higher Plus
19th April 1973
- 1Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 64. Work out y when x = 4.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = c. P is the point dividing AB in the ratio 1 : 2. Write vector OP in terms of b and c.
- 3Probability Equation Questions3 marks
The probability of winning a game is 2/5. A player expects 52 wins. How many games did they play?
- 4Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 3, 0.5, 1. Which class contains the median?
- 5Surds3 marks
Simplify sqrt(27) + sqrt(75), 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 April 1973, including the monthly compilation PDF.