Give the geometric representations of 2x + 9 = 0 as an equation in two variables.
In two variables, 2x + 9 = 0 represents a straight line passing through point (−4.5, 0) and parallel to y-axis. It is a collection of all points of the plane, having their x-coordinate as 4.5.
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- Equations of Lines Parallel to the X-axis and Y-axis