Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
22nd December 2005
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 6a + 2b and vector RS = 24a + 8b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/2. A player expects 24 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 4-wide bar and a 16-wide bar have the same frequency density of 2.5. How many more values are in the wider class?
- 4Surds3 marks
Simplify sqrt(75) + sqrt(3), giving your answer in the form a sqrt(b).
- 5Transforming Graphs y=f(x)3 marks
The point (0, 4) lies on y = f(x). Write down its image on y = -f(x).
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