Answer:
slope = -17/11
Step-by-step explanation:
The slope of a line that passes through the points (x1, y1) and (x2, y2) can be calculated as:

So, if we replace (x1, y1) by (-11, 15) and (x2, y2) by (0, -2), we get that the slope is:

Therefore, the slope of the line is -17/11