Daily Practice

Higher

10th February 1990

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Box Plots2 marks
A box plot has minimum 12, lower quartile 18, median 28, upper quartile 34 and maximum 43. Work out the interquartile range.
2
The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -5x + 1. Work out the gradient of any line perpendicular to it.
4
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 112. Work out y when x = 6.
5
Enlarging with Negative Scale Factors3 marks
The point (0, 6) is enlarged by scale factor -2 about the centre (2, 4). Write down the coordinates of the image.

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