All points on the same line are colinear but if you mean what are the points all called collectively - they represent a "locus of points".
They are collinear points that lie on the same line
line segment
colinear
Collinear
A line of best fit
Any two points lie on the same line, since a line can be drawn through any two points.Three points that lie on the same line are described as being "collinear" points.
Chord
This is true as long as the slope of the line is constant, if it is a straight line and doesn't curve, then yes it doesn't matter which points are chosen.
Apex:true
A straight line that intersects a circle's circumference at two points will create a chord of which the circle's diameter is its largest chord.
Slope of line: (y2 -y1)/(x2-x1)
A chord.