Question

A, B, and C are collinear, and B is between A and C. The ratio of AB to AC is 1:4. If A is at (-7,-8) and B is at (-3,-5) what are the coordinates of point C?

Answer 1

Explanation:

the coordinates of C are (9,4) if its from khan academy

Answer 2

To get the coordinates of C we shall proceed as follows:

AB:BC=1:4
B-A=[(-3--7),(-5--8)]=(4,3)
4(4,3)=(16,12)
thus the coordinates of C will be:
(16-3,-5+12)
=(13,7)