Question

Which line is parallel to the line that passes through the points
(2, –5) and (–4, 1)?

Answer 1

If two lines are parallel that means that they have the same slope.

The slope of the line crossing these points is:

m = (y2 - y1)/(x2 - x1)
=(1 - (-5))/(-4 - 2)
=6/(-6)
=-1

So any line that has a slope of -1 is parallel.

Is this a multiple choice?