What is the difference between a line and a line segment

The difference between a line and a line segment is that a line goes on forever whereas a line segment is just a section of a line with 2 end points.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)