Question

Solve the following quadratic equation by completing square.

$x=3$

Answer 1

In the linear equation $x=3$, there is no term for $y$. This means, that $y$ can take any value. Points lying on the line $x=3$ can be $(3,0),(3,3)$ or $(3.-4)$. Plotting these points on the graph paper and joining them, we get the graph for $x=3$.