#4 (permalink)

slope=change in y value/change in x value=rise over run or slope

so

(-6,9) and (-11,-4)

9-(-)4=13 (change in y value)

-11-(-)6=5 (change in x value)

so 13/5=y/x=rise over run

so the slope is 13/5 so rise 13 run 5, slope =13/5

so use one of your coordinates and plug in with y=mx+b

-6,9
x, y

y=13/5(-6)+9=-6.6, which you have to convert the decimal to an improper fraction, then you have your equation solved...

I hope i helped, its been about 4 years since my last math class in highschool. Im in calc now and i cant remember the last time i did algebra