Higher Plus
18th February 1969
- 1Histograms2 marks
On a histogram, a 4-wide bar and a 8-wide bar have the same frequency density of 2. How many more values are in the wider class?
- 2Surds3 marks
Expand and simplify (4 + sqrt(2))(4 - sqrt(2)).
- 3Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 12x - 8.
- 4Velocity Time Graphs3 marks
A cyclist speeds up steadily from 6 m/s to 23 m/s over 4 seconds. Use the area under the velocity-time graph to find the distance travelled.
- 5Proof of the Circle Theorems2 marks
In a circle theorem proof, a step uses the fact that two tangents are drawn to a circle from the same external point. State the reason being quoted.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1969, including the monthly compilation PDF.