First, you would need to find the slope of those two points by doing change in y over the change in x and you'd get 1-(-9) over -6-5 to get the slope of -11/10. Now you know the slope and have points available to use. Using the point (-6,1) and point-slope formula y-y1=slope(x-x1) you can substitute and get y-1=-11/10(x-(-1))