First slide

Equation of line in Straight lines

Question

The slope of the line which is perpendicular to the angular bisector of axes which makes obtuse angle is

Moderate

A

3
B

2
C

1
D

4

Solution

The angular bisector of axes are $y = x, y = - x$
In the above two lines, the slope of the line $y = - x$ is negative, it means inclination is obtuse,
The slope of the line of the perpendicular to the line $y = - x$ is $m = 1$

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