Daily Practice · Higher

Daily Practice - Higher

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

2nd June 2007

5 questions · 14 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 = 6, y = 252. Work out y when x = 5.
2
Vectors3 marks
a is the column vector (0, -4) and b is (0, -1). Work out 4a - 3b as a column vector.
3
Probability Trees3 marks
3 of 6 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 5, lower quartile 7, median 9, upper quartile 16 and maximum 25. Work out the interquartile range.
5
Fractional and Negative Indices3 marks
Work out 27^(2/3).

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