Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

4th April 2009

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 36. Work out y when x = 4.
2
Vectors3 marks
a is the column vector (-5, 0) and b is (5, -3). Work out 3a - 2b as a column vector.
3
Probability Trees3 marks
7 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 13, lower quartile 19, median 26, upper quartile 32 and maximum 35. Work out the interquartile range.
5
The Product Rule for Counting2 marks
A meal deal has 8 mains, 9 sides and 5 drinks. How many different meals are possible?

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