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Which equation has a graph parallel to the $y$ -axis?

Class 9Lines Parallel to the AxesLinear Equations

A $3 x + 12 = 0$
B $3 y + 12 = 0$
C $3 x + 3 y = 12$
D $y = 3 x + 12$

Step-by-Step Solution

3 x + 12 = 0

gives

x = - 4

, a constant, so its graph is a vertical line parallel to the

y

-axis.

Answer: A)

3 x + 12 = 0

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