Find an equation of the line containing the given pair of points (-2,-3) and (-9,-1) in slope-intercept form
y=mx+b
I think m=-2/7
correct. So, plug in either point. Using (-2,-3), you have
-3 = (-2/7)(-2) + b
b = -25/7
so,
y = -2/7 x - 25/7