Observe the following pattern, identify the variable, and write the general expression of the number of legs in terms of the number of horses in a stable.
| Number of horses in a stable | 1 | 2 | 3 | 4 | ... | n |
| Total number of legs in stable | 4 | 8 | 12 | 16 | ... | ... |
"
Given :
The Number of legs in a stable is 4 when the number of horses in a stable is 1.
The number of legs in a stable is 8 when the number of horses in a stable is 2.
The number of legs in a stable is 12 when the number of horses in a stable is 3.
To do :
We have to write a general expression for the given table.
Solution :
Let the variable of the expression be m.
Therefore,
$4=m(1)$
$m=4$.
If x is the number of horses in the stable and y the number of legs in the stable, then it can be represented by $y = 4m$.
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