What is the slope of a line segment whose inclination is $135^{\circ}$ ?

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-1

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-2

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Solution

The correct option is B -1
Slope of line $m = t a n θ$

Here, $θ = 135^{\circ}$

$m = t a n 135^{\circ}$

$= t a n (90^{\circ} + 45^{\circ})$

$= - c o t 45^{\circ} = - 1$

$∴$ , slope of the line is $- 1$

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