Answer: A
Step-by-step explanation: Because I got it wrong and it said it said it was A
Three or more points are collinear, if slope of any two pairs of points is same. With three points A, B and C, three pairs of points can be formed, they are: AB, BC and AC. If Slope of AB = slope of BC = slope of AC, then A, B and C are collinear points
It'll be the opposite reciprocal in front of the X like instead of 3 it will be -1/3 so flip it and change the sign
1 cm is the base of the triangle
