Foundation Plus
30th September 1968
- 1Real Life and Distance Time Graphs3 marks
A coach travels 30 km in 1.5 hours, then 20 km in 1.5 hours. Work out the average speed for the whole journey, to 1 decimal place.
- 2Vectors2 marks
a is the column vector (-6, 0) and b is (-1, -8). Work out a + b as a column vector.
- 3Probability Trees3 marks
5 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 6x + 36. Use it to estimate y when x = 9.
- 5Error Intervals2 marks
A number y is 38 when truncated to the nearest whole number. Write down the error interval for y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1968, including the monthly compilation PDF.