Answer: The relationship between points (-3,2) and (-3,3), and points (-1,2) and (-1,1) have a zero slope.
Step-by-step explanation: In a coordinate plane, the slope of a line is calculated by the change in y divided by the change in x, often expressed as rise over run. If the x-coordinates of two points are the same, meaning there is no change in x (run is zero), then the line is vertical. A vertical line has an undefined slope. However, if the y-coordinates of two points are the same, meaning there is no change in y (rise is zero), then the line is horizontal. A horizontal line has a zero slope. Therefore, the relationships between points (-3,2) and (-3,3), and points (-1,2) and (-1,1) represent horizontal lines, and thus, have a zero slope.