Proving Two Variables in Direct Proportion
Proving Two Variables in Direct Proportion
Secondary 2
The table shows some corresponding values of \(x\) and \(b\).
| \(x\) | \(2\) | \(4\) | \(6\) |
|---|---|---|---|
| \(b\) | \(12\) | \(24\) | \(36\) |
- Show that \(x\) and \(b\) are in direct proportion.
- Sketch the graph of \(b\) against \(x\).
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Answer:(a) \(b/x=6\) for each given pair. (b) The straight line \(b=6x\), through the origin with gradient \(6\).
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