If two lines are perpendicular, are the slopes of the two lines negative reciprocal to each other? rt

If two lines are perpendicular, are the slopes of the two lines negative reciprocal to each other? rt

K1 * K1 = - 1, right

If the slopes of two straight lines are reciprocal to each other, what is their positional relationship?

If the slopes of two lines are reciprocal to each other, there is no special relationship, that is, they intersect
If the slopes of two lines are negative reciprocal to each other, what is their vertical relationship

What are the slopes of the lines perpendicular to the X and Y axes

There is no slope perpendicular to the X axis
The slope perpendicular to the Y axis is equal to 0

The line L passes through points a (1,2), B (m, 3). If the inclination angle a belongs to π / 4 to π / 3, the value range of M is obtained

The slope of the straight line passing through two points AB is k = (3-2) / (m-1) = 1 / (m-1), because k = Tana
Tan π / 4 = 1, Tan π / 3 = root 3, so 1