i need to find the equation of the line AB from A(2,0) B(3,1)
for this would i do:
AB=(square root) 1^2 + 1^2= (square root)2?
is this correct? if not where am i going wrong?
The equation of a line refers to an equation in x and y which all points on that line satisfy. You have tried to find out the length of the line-segment AB which is not required. The following link should help.
Linear equation - Wikipedia, the free encyclopedia
That is not how it is done. In an equation you perform the same operation on both sides. For example you can subtract some quantity, or divide both sides by a non-zero number. Which of the above would you do to get only c in a single side of 1 = 3 + c ?