Question

determine whether the points lie on a straight line:

a(2,4,2), b(3,7,-2) c(1,3,3)

&

d(0,-5,5), e (1,-2,4), f(3,4,2)

I'm not sure how to solve this, any hints would be appreciated.

Answer 1

If the slope between every two points is the same, then it is linear

Answer 2

Slope in XY plane
2-3 / 4-7 = 1/3

Slope in YZ plane
4-7 / 2+2 = -3/4

Slope in XZ plane
-1/4

Answer 3

i see now, thank you!