Daily Practice · Higher

Daily Practice - Higher

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

19th March 2011

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 = 5, y = 100. Work out y when x = 3.
2
Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -4. Work out the gradient of a line perpendicular to it.
3
Conditional Probability3 marks
15 students study Spanish and 8 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 15, lower quartile 25, median 29, upper quartile 38 and maximum 48. Work out the interquartile range.
5
Fractional and Negative Indices3 marks
Work out 216^(2/3).

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