A, B, C, and D have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. Which sentence about the points is true?
A, B, C, and D lie on the same line.
AB and CD are perpendicular lines.
AB and CD are parallel lines.
AB and CD are intersecting lines but are not perpendicular.
AB and BD are parallel lines.

Question

triciaal · Answer

welcome to Openstudy!!!

parriscite · Answer

Have you graphed the points?

thedoctorsnerdgirl · Answer

No. I don't have any graph paper and I don't like geogebra

triciaal · Answer

do a sketch

triciaal · Answer

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triciaal · Answer

plot the points on my grid 

what do you know about parallel lines?
what do you know about perpendicular lines?

triciaal · Answer

do you know how to plot the points?

thedoctorsnerdgirl · Answer

Yes

triciaal · Answer

on my response above   click on the pencil on the right

triciaal · Answer

do you know how to find the slope of a line?