Question

50 Points:

What are the coordinates of the point that is
2/3 of the way from A to B?
Point A: -4,-1
Point B: 5,5

A. 1,2
B. 0,5/3
C. 2,3
D. -1,1

Answer 1

(-2,3)

Explanation:

For the point to be 2/3 of the way; it means it divides AB into the ratio 2 to 1

Now, we can use the internal section formula to get the coordinates of this point

(x,y) = (nx1 + mx2)/(m + n), (ny1 + my2)/(m + n)

where (m,n) = (2,1)

(x1,y1) = (-4,-1)

(x2,y2) = (5,5)

(x,y) = (1(-4) + 2(-1)/(1+2), (1(-1)+2(5)/(1+2)

(x,y) = (-4-2)/3, (-1 + 10)/3

(x,y) = (-2,3)