I have this HW problem, and it asks "are the following points on a graph collinear?" (in which i got 5 graph points, all of which i needed to plot) but I dunno if the answer is yes or no, cuz i dont know what collinear is
2006-11-20 13:06:18 · 4 answers · asked by woah 2 in Science & Mathematics ➔ Mathematics
Collinear means the points are all on the same line.
2006-11-20 13:08:02 · answer #1 · answered by Melody 3 · 0⤊ 1⤋
Collinear means that the points lie on the SAME LINE. Therefore if you can find an equation of a line that passes through two of the points, then those points are collinear.
Since you have 5 points, I am guessing that you need to see if all 5 points are on the same line.
One thing you can do is see if the slope between all 5 points are the same. Then they are all collinear.
Recall the formula for slope is y2 - y1 / x2 - x1.
If you get 2 different slopes for any sets of points, then they are not collinear.
2006-11-20 21:10:28 · answer #2 · answered by pecosbill2000 3 · 0⤊ 1⤋
Well, it doesn't sound like you're doing slope yet, so don't listen to pecosbill. Use graph paper and graph the 5 points. Are the all on the same line? Then they are collinear.
2006-11-20 21:27:28 · answer #3 · answered by Math Geek 2 · 1⤊ 0⤋
They have to be on the same line, I think...
2006-11-20 21:08:30 · answer #4 · answered by x_moonlightshine 2 · 0⤊ 2⤋