Question

If a straight line passing through the points $P(x_1,y_1),Q(x_2,y_2)$ is making an angle '$\theta$' with positive X-axis, then the slope of the straight line is .......

• A. $\frac{y_2+y_1}{x_2+x_1}$
• B. $\theta$
• C. $\frac{y_2-y_1}{x_2-x_1}$
• D. $\sin \theta$

Answer 1

The correct option is C $\frac{y_2-y_1}{x_2-x_1}$

$C$ is the slope of line

Slope of line will be $\tan \theta$ that will be given by $\frac{y_2-y_1}{x_2-x_1}$