What is 0.64 as a fraction?
\[\frac{64}{10}\]
\[\frac{16}{25}\]
\[6\frac{4}{10}\]
If 4 calculators cost £4.80, how much would 9 calculators cost?
£10.80
£9.60
£15.60
What is the scale factor of enlargement between these two shapes?
3
4
5
How is the volume scale factor calculated?
Find the length scale factor and double
Find the length scale factor and square
Find the length scale factor and cube
The smaller cuboid is directly proportional to the bigger cuboid. What is the volume of the bigger cuboid?
480 cm3
120 cm3
60 cm3
y is directly proportional to x2. What is this in proportion notation?
y2 ∝ x
y ∝ x2
\[y \propto \frac{1}{x}\]
a is directly proportional to b. When a = 5, b = 8. What is an equation connecting a and b?
b = ka
\[a = \Big(\frac{8}{5}\Big)b\]
\[a = \Big(\frac{5}{8}\Big)b\]
a is directly proportional to b, when a = 5, and b = 8. What is the value of a when b = 24?
10
15
20
c is inversely proportional to d, when c = 10, and d = 6. What is the value of d when c = 20?
12
9
The graph below shows exponential growth. What is the equation of the graph?
y = kx
y = -kx
y = k-x