Daily Practice · Higher

Daily Practice - Higher

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

21st December 2013

5 questions · 12 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 = 108. Work out y when x = 8.
2
Perpendicular Lines and the equation of a tangent2 marks
A line has gradient 2. Work out the gradient of a line perpendicular to it.
3
Conditional Probability3 marks
11 students study Spanish and 5 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
4
Box Plots2 marks
A box plot has minimum 13, lower quartile 18, median 22, upper quartile 28 and maximum 34. Work out the interquartile range.
5
Bounds2 marks
A mass is 17.7 kg, correct to 1 decimal place. Write down the lower bound.

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