18. given points a(1,5), b(-2,-1), c(1,1).
and d(3,5). what type of lines are ab
and cd?

The line segments are parallel.

Step-by-step explanation:

First, I never have graph paper when it is needed so I suggest Geogebra.com.

Now slope is found by rise over run so I took the points on the graph and counted where they intersected with any other points on the line. AB was 2/1 which means 2. I did the same for the other line segment and found 2/1 : 2. so both of the slopes are the same so you have parallel lines.

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

it's both, now can you answer my most recent question?