Maths
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Power of <strong>Maths</strong>: Paper 1 – Section 1<br />
(f) What is t when s = 35 m?<br />
t =<br />
(g) Complete the sentence: s is _________________________________________ proportional to t.<br />
⇒ s =<br />
⇒ s _<br />
t =<br />
× t<br />
Activity 14: Understanding inverse<br />
proportion<br />
OBJECTIVE: To draw a graph from a table of results and to answer questions that involve inverse<br />
proportionality<br />
The following table shows the relationship between the frequency f (Hz) of a sound wave and its<br />
wavelength λ (m).<br />
k 2 4 6 8<br />
f 180 90 60 45<br />
1. Complete the table below:<br />
k 2 4 6 8<br />
f 180 90 60 45<br />
f k<br />
1__<br />
k<br />
2. On the grid below plot f against 1 __<br />
λ .<br />
f(Hz)<br />
180<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
18<br />
0·1 0·2 0·3 0·4 0·5 0·6 1<br />
– (m –1 )<br />
λ
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