2.2 Parallel and Perpendicular Lines and Circles. Slopes and Parallel Lines If two nonvertical lines are parallel, then they have the same slopes. If two distinct nonvertical lines have the same slope, then they are parallel. Two distinct vertical lines, with undefined slopes, are parallel.
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Slopes and Parallel Lines
Slope of the line is –5.
Slope is –3/2.
A circle is the set of all points in a plane that are equidistant from a fixed point called the center.
The fixed distance from the circle’s center to any point on the circle is called the radius.
Any point on the circle