Foundation Plus
31st August 1985
- 1Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = -24/x, work out y when x = 4, and write down the equation of its vertical asymptote.
- 2Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 4, y = 40. Work out y when x = 5.
- 3SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has a hypotenuse of 8 cm and an angle of 36°. Work out the side opposite that angle, to 1 decimal place.
- 4Probability Trees3 marks
A bag holds 4 red and 5 blue counters. Two are taken without replacement. Work out the probability both are red.
- 5Box Plots2 marks
A box plot has minimum 12, lower quartile 16, median 21, upper quartile 28 and maximum 32. Work out the interquartile range.
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