Answer:
In slope intercept form:
y= .2x -1
Explanation:
You can find the slope by using the formula (y2-y1)/(x2-x1).
Then you get: (-2-2)/(-5-15) = -4/-20 = .2
.2 is your slope(m).
Plug this information into point slope form: y-y1 = m(x-x1)
y-2 = .2(x - 15)
Distribute the .2.
y-2 = .2x - 3
Rearrange the formula to isolate y.
y = .2x -1