Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Box Plots2 marks
A box plot has minimum 14, lower quartile 23, median 33, upper quartile 38 and maximum 47. Work out the interquartile range.
- 2The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 5x + 1. Work out the gradient of any line perpendicular to it.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 28. Work out y when x = 7.
- 5Enlarging with Negative Scale Factors3 marks
The point (5, -5) is enlarged by scale factor -2 about the centre (-3, 0). Write down the coordinates of the image.
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