I know the point slope formula, but I don't know which points are x1,y1 etc to plug them in

http://prntscr.com/blx76n

Question

I know the point slope formula, but I don't know which points are x1,y1 etc to plug them in

http://prntscr.com/blx76n

geerky42 · Answer

Points are $(x_1,y_1)$ and $(x_2,y_2)$

Order doesn't matter.

geerky42 · Answer

So we have $(x_1,y_1)=(6,13)$ and $(x_2,y_2)=(14,9)$

So $x_1=6\~\x_2=14\~\y_1=13\~\y_2=9$

geerky42 · Answer

Can be done other way around. Both will work.

mathguy5 · Answer

Would I use those 2 coordinates to find the slope?

geerky42 · Answer

Yes because $m=\dfrac{y_2-y_1}{x_2-x_1}$ so two points are required

mathguy5 · Answer

Thank. I need help with 1 more part please. Part B http://prntscr.com/blxb6i

mjdennis · Answer

And to add a little bit to @geerky42 's answer, when you plug into the point-slope formula:$$y-y _{0} = m(x-x _{0})$$EITHER point (6,13), or (14,9), can be used for(x0,y0) !
Just leave "x" as the variable x, and "y" as the variable y, and you will get your equation.