Question

If a line is passing through the points $(2,-5),(-5,-5)$ then prove that line will be parallel to $x$ axis and if a line is passing through the points $(6,3),(6,-3)$ then prove that line will be perpendicular to the $x$-axis.

Answer 1

Slope of line passing through

(2, -5) and (-5, -5) is

0

$\Rightarrow$ line is 11 to x- axis

slope of line passing through

(6,3), (6,-3) is $\infty$

$\Rightarrow$ line is parallel to y-axis