How can coordinate proof be used to prove two lines are parallel?

Question

Mathematics

Ellie Calderon

28 February, 19:30

How can coordinate proof be used to prove two lines are parallel?

+4

Answers (1)

Know the Answer?

Isabelle Kirby · Answer 1

You can use the coordinates to find the slope of each line. If you can show the two slopes are equal, then the lines are parallel.

Side note: If the lines are vertical, and never cross, then they will be parallel despite having an undefined slope. This is one of the exceptions to the rule.