SOLUTION: ok i have to wtire these in point slope equations but im supposed to do the whole x2-x1 and y1-y2 and i been doing it bt something isnt right?(5,3) and (4,-6) and i got y-6=-(x=4)

Algebra ->  Linear-equations -> SOLUTION: ok i have to wtire these in point slope equations but im supposed to do the whole x2-x1 and y1-y2 and i been doing it bt something isnt right?(5,3) and (4,-6) and i got y-6=-(x=4)       Log On


   

Question 267252: ok i have to wtire these in point slope equations but im supposed to do the whole x2-x1 and y1-y2 and i been doing it bt something isnt right?(5,3) and (4,-6) and i got y-6=-(x=4) and y-3=-(x+5) what am i doing wrong
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Since you are given two points, you can proceed one of two ways. You can either use the two-point form of the equation of a line:



Or you can use the slope formula:



and then apply the calculated slope to the point-slope form of the equation of a line:



Where and are the coordinates of your given points.

Let's presume that and

It doesn't really matter which you select to be 1 and which you select to be 2 as long as you are consistent throughout any given problem.

First calculate the slope:



Now substitute values in the point-slope form:







From there you can go to slope-intercept form:



Or to standard form:




John