## Tributized 3 years ago Graph the points for Line AB and Line CD A(8, 4), B(4, 3), C(4, -9), D(2, -1) Is the measure perpendicular, parallel, or neither? My answer is perpendicular according to the slope formula but when you graph it, it's different. There's no intersection. Help please?

1. Tributized

2. countonme123

make intersecting lines on a graph

3. Tributized

you mean i should draw it?

4. countonme123

yes you have to draw it and then mark the spots. that is the only way we can tell what the lines look like.

5. Tributized

|dw:1349305969471:dw| This is how the graph looks like, but perpendicular lines have intersection points, this one doesn't. And according to how I solved it (twice) with the slope formula, it's a perpendicular line. But in the graph it shows like this.

6. Geometry_Hater

If the lines look like that then they would intersect perpendicularly. So i think you are right.

7. Tributized

Wait, so you're saying they WILL intersect?

8. Tributized

@Geometry_Hater

9. Geometry_Hater

They're lines right? So they would go on forever.....Eventually intersecting at some point unless of course they are parallel.

10. Tributized

OH LOL I NEVER THOUGHT OF THAT '-' Thanks! XD