Question

Find the slopes of the line whose inclination is ${135}^{\circ }$.

• A. $1$
• B. $-1$
• C. $\sqrt{3}$
• D. $-\sqrt{3}$

Answer 1

Answer: (B)

$-1$

We know that, if inclination of a line with positive x-axis is $\theta$, then slope $,m=\tan \theta$

Here $\theta ={135}^o$ is given

So slope, $m=\tan {135}^o=-1$