Well 42 divided by 2 is 21. than to double check you can do 21 plus 21 equals 42.
2x1=2
2+1=3/2
=3/2 is the answer
I dont even get the question
collinear points are points in the same line, like
●-----------------●------------------------------------------●
and the line will always be contained by a plane, so since the line is in a plane, all points in it will also be in the same plane, and therefore be coplanar.
