Question

1. multiple choice 1 point
2. the slopes of perpendicular lines are ___.

a) equal
b) opposite reciprocals
a
b

Explanation:

In geometry, if two non - vertical lines are perpendicular, the product of their slopes is - 1. This means the slopes are opposite reciprocals. For example, if one line has a slope of 2, the slope of a line perpendicular to it is $-\frac{1}{2}$. Equal slopes indicate parallel lines.

Answer:

B. opposite reciprocals