Higher Plus
14th December 1979
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 384. Work out y when x = 5.
- 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 3 : 1. Write vector OP in terms of b and c.
- 3Probability Equation Questions3 marks
The probability of winning a game is 1/4. A player expects 10 wins. How many games did they play?
- 4Histograms3 marks
On a histogram the bar for 50 < x <= 55 has a frequency density of 1.2. How many values are in that class?
- 5Surds3 marks
Rationalise the denominator of 132/sqrt(11), giving your answer in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1979, including the monthly compilation PDF.