If the slope of two lines are equal , then the lines are `"_______"`

Given below are pairs of statements. Combine them using ‘if and only if' : p: If two lines are parallel, then their slopes are equal. q: If the slopes of two lines are equal, then they are parallel.

Rewrite each of the following statements in the form 'p if and only if q'. Give below are pairs of statements. Combine them using 'if and only if' : p : If two lines are parallel, then their slopes are equal. q : If the slopes of two lines are equal, then they are parallel.

If the slope of a line is not defined then the line :

Slope Of A Line

Slopes of Lines

Slope Of A Line

We know that the slopes of two parallel lines are equal. If two lines having the same slope pass through a common point, then they will coincide. Hence, If A, B and C are three points in the XY-plane, then they will lie on a line i.e. three points are collinear if and only if slope of AB=slope of BC.

If m_(1) , m_(2) are the slopes of two lines and theta is the angle between two lines then tan theta =

If 'm_(1)',m_(2)' are the slopes of two lines and theta is the angle between two lines then tan theta=

If m_(1),m_(2) are the slopes of two lines and theta is the angle between two lines then tan theta =