Algebra-1

Definitions

Perpendicular Lines: Lines are perpendicular if they intersect at a right angle (90 degrees). In terms of slopes, this means the product of their slopes is−1, but if slopes are not given, other indicators can help identify perpendicularity.

Visual Indicator:

The perpendicular mark between Line B and Line C directly tells us that these two lines form a 90-degree angle with each other.

Slopes Consideration:

Line A and Line B: Since both are ascending, they have positive slopes. For two lines with positive slopes to be perpendicular, one would need to be negative. Thus, they cannot be perpendicular.