Daily Practice

Higher Plus

27th October 1983

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Histograms2 marks
On a histogram, a 4-wide bar and a 16-wide bar have the same frequency density of 3. How many more values are in the wider class?
2
Surds3 marks
Simplify sqrt(50) + sqrt(72), giving your answer in the form a sqrt(b).
3
Transforming Graphs y=f(x)3 marks
The point (-2, 6) lies on y = f(x). Write down its image on y = -f(x).
4
Velocity Time Graphs3 marks
A tram runs at 11 m/s for 20 s, then slows steadily to rest over 4 s. Work out its average speed for the whole journey, to 2 decimal places.
5
Perpendicular Lines and the equation of a tangent3 marks
The point (7, 24) lies on the circle x^2 + y^2 = 625. Work out the gradient of the tangent to the circle at that point.

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