Answer:
Step-by-step explanation:
When finding the slope of the line given two points, use the formula (y2-y1)/(x2-x1). In this case, perform (-2--2)/(-9--1)=0/-8=0. In this case, the slope of the line is 0. The function on which these two points exist is the function y=2, which is just a horizontal line and therefore has a slope of 0!