Parallel & Perpendicular Lines
Parallel or Perpendicular?
Example 1
Determine whether the lines are parallel, perpendicular or neither. One line passes through points (2, 11) and (-1, 2); another line passes through points (0, -4) and (-2, -10).
Step 1. Determine the slope of each line.
Step 2. Compare the slopes.
The slopes are equal, so the lines are parallel.
*Note: points from the same line would also produce equal slopes, verify that these are two different lines by graphing each set of points.