Daily Practice

Higher Plus

8th October 1975

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Conditional Probability3 marks
A bag holds 4 red and 4 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
On a histogram the bar for 10 < x <= 30 has a frequency density of 0.4. How many values are in that class?
3
Bounds3 marks
A rectangle is 28 cm by 22 cm, each correct to the nearest cm. Work out the upper bound of its area.
4
Transforming Graphs y=f(x)3 marks
The point (-2, 1) lies on y = f(x). Write down its image on y = -f(x).
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 384. Work out y when x = 2.

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