9514 1404 393
Answer:
y = -x + 5/2
Explanation:
The 2-point form of the equation of a line can be useful.
y = (y2 -y1)/(x2 -x1)/(x -x1) +y1
y = (-2.5 -11)/(5 -(-8.5))/(x -(-8.5)) + 11
y = -13.5/13.5(x +8.5) +11 . . . . . . simplify a bit
y = -x +2.5 . . . . . write in slope-intercept form