Question

The set of points C(1, -1), D(3, 4), E(5, 8) are collinear.
True or False

Answer 1

Hey there, do you know how to find the equation of a straight line through any 2 points? If you do this is easy. You just find jthe equation for 2 points and then see if the third point also satisfies that equation. If it does they are collinear and if not they are not.

Answer 2

Here is how you find the equation through any 2 points:

http://www.mathsisfun.com/algebra/line-equation-2points.html