Question 139929
To show that the points are collinear, find the slope between any two sets of points.  If the slopes are the same, then they are collinear.


(1,9),(7,3), and (10,0)


Slope = {{{(RISE)/(RUN) }}}
Slope from (1,9) to (7,3) = {{{(3-9)/(7-1)= (-6)/6=-1}}}


Slope from (1,9) to (10,0)= {{{(0-9)/(10-1)=-9/9=-1}}}


Therefore, the points are collinear.


R^2