# LINR 1 | Lesson 4 | Making Connections (Parallel and Perpendicular Lines) Solution

In Graph 1, the slopes are the same, but the $$y$$-intercepts are different.  Parallel lines will never intersect and are denoted by having the same slope.

In Graph 2, the $$y$$-intercepts are different, and the slopes are different. One line has a positive slope and the other line has a negative slope.  The slope of the red line is $$-\Large\frac{1}{2}$$ and the slope of the blue line is $$2$$, which are negative reciprocals. Perpendicular lines are denoted by slopes that are negative reciprocals of each other.

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