Question

what do two parallel lines have in common? two parallel lines have the same y - intercept. two parallel lines have the same slope. rewatch

Explanation:

The definition of parallel lines in the coordinate - plane is that they have the same slope. They may or may not have the same y - intercept. If they have the same y - intercept and the same slope, they are the same line.

Answer:

Two parallel lines have the same slope.