Brainlag PlusUsing multiples to show lines are parallel or points lie on a straight line, and matching amounts of a and b.
Parallel means a multiple
If PQ = 2a − 4b and RS = −a + 2b, then PQ = −2 × RS.
A multiple means parallel. Say so in words: "PQ is a multiple of RS, so PQ is parallel to RS."
The rest of this lesson and its 8 practice questions are in Plus.
Screen 1 of 4, free to read.
- 8 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards