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Question
From the following table, determine if x and y are in direct proportion or not.
| x | 4 | 7 | 10 | 16 |
| y | 24 | 42 | 60 | 96 |
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Solution
In direct proportion, `x/y = k` ...(Constant)
For table
| x | 4 | 7 | 10 | 16 |
| y | 24 | 42 | 60 | 96 |
⇒ `x/y = 4/24, 7/42, 10/60, 16/96`
i.e. `1/6, 1/6, 1/6, 1/6`
So, is in direct proportion.
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