points and lines

Points and lines :

1. A point is a position inn plane. It has no size i.e. no width, no length , and no depth .A point is shown by a dot.

2 . A line is defined as a line of points that extends infinitely in two directions .It has one dimension i.e., length.

Derivation:

Let us consider a straight line passing with intercept as "c" and slope as "m".

Again consider any variable point , let it be (x,y).

The intercept point be (0,c)

So slope can be found as ∆y/∆x

Therefore,

m = ∆y/∆x

=> m = (y-c)/(x-0)

=> m = (y-c)/x

=> mx = y-c

=> y = mx +c.