Identify which of the following is/are linear equation(s) in two variables.

3 x - 2 y = 15

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x^{2} - 2 y = 1

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3 x - 2 \sqrt{y} = - 6

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3 x - x^{2} = 7

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Solution

The correct option is A $3 x - 2 y = 15$
The equation $3 x - 2 y = 15$ is of the form $y = m x + c$ . Hence, it is a linear equation. The degree of its variable is also one, hence the equation can be said linear.

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