The slope of a line can be found by choosing any two points of that single line, not of multiple lines.
Yes this true at one point in time
To get two points you could shoot a basket because one basket equals two points. Or two free throws.
Yes. Any two points are always coplanar.
Any two points are always collinear, since you can draw a straight line passing through any two points.
Any two points have to be on some line.
There is no intrinsic difference. Either can be named using the names of any two points on them, or using any letter or symbol of any alphabet - including symbols that you have made up.
Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.
No. Any two points can be made to form a line.
With only two points you don't know the direction of the graph. Drawing a graph using only two points can result in the diagram being wrong.
== == Through any two points there is exactly one straight line.
Not sure what two non-consecutive points are. No two points are consecutive in the sense that an infinite number of points can be found between any two points.