The cost of a toy elephant is the same as the cost of 3 balls. Express the statement as a linear equation in two variables.

# The cost of a toy elephant is the same as the cost of 3 balls. Express the statement as a linear equation in two variables.

1. A
x-y=3

2. B
x-3y=0

3. C
x+y=3

4. D
x=3y

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### Solution:

A linear equation in two variables is an equation that can be written as a form

The cost 3 balls =
The cost of a toy elephant = the cost of 3 balls.
⇒x=3y

So, option 2 is correct.

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