Is m a perpendicular line

To determine if a line with slope ( m ) is perpendicular to another line, you need to check the relationship between their slopes. Two lines are perpendicular if the product of their slopes is (-1). Therefore, if you have the slope of one line, you can find the slope of a perpendicular line by taking the negative reciprocal of that slope. If ( m ) is equal to this negative reciprocal, then it is a perpendicular line.