Are the points (-4,-1), (2,1) and (11,4) collinear? justify your answer.

Yes , the points (-4,-1), (2,1) and (11,4) are collinear.

Step-by-step explanation:

We know that if three points and are collinear, then their area must be zero.

The area of triangle passes through points and is given by :-

Given points : (-4,-1), (2,1) and (11,4)

Then, the area of ΔABC will be :-

Hence, the points (-4,-1), (2,1) and (11,4) are collinear.

a. she will receive a refund of $278.

step-by-step explanation: