If a linear equation is of the form x = k where k is a constant,

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If a linear equation is of the form x = k where k is a constant, then graph of the equation will be

1. a line parallel tox-axis
2. a line cutting both the axes
3. a line making positive acute angle with x-axis
4. a line parallel to y-axis

Correct Option: D

Hence, the graph of the equation will be a line parallel to y – axis
i.e. x = k.