Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
1st December 2024
- 1Probability Equation Questions3 marks
A bag holds 10 counters, r of them red. Two are taken without replacement and P(both red) = 7/15. Work out r.
- 2Histograms3 marks
On a histogram the bar for 20 < x <= 25 has a frequency density of 1.2. How many values are in that class?
- 3Bounds3 marks
x = 185 and y = 115, each correct to the nearest whole number. Work out the upper bound of x - y.
- 4Transforming Graphs y=f(x)3 marks
The point (-2, 0) lies on y = f(x). Write down its image on y = f(x + 5).
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 384. Work out y when x = 5.
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