Practice problem
Select all the parallel lines below.
6x+9y=166x+9y=166x+9y=16
9x+6y=169x+6y=169x+6y=16
3x+2y=63x+2y=63x+2y=6
3x+2y=603x+2y=603x+2y=60
Type a concept, like “slope” or “photosynthesis”.