Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
30th October 1997
- 1Probability Equation Questions3 marks
The probability of winning a game is 1/8. A player expects 15 wins. How many games did they play?
- 2Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 0.5, 2, 1, 3. Which class contains the median?
- 3Surds3 marks
Simplify sqrt(75) + sqrt(75), giving your answer in the form a sqrt(b).
- 4Transforming Graphs y=f(x)3 marks
The point (1, 4) lies on y = f(x). Write down its image on y = -f(x).
- 5Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 100. Work out y when x = 5.
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