It will be easiest if you draw yourself a little grid with the coordinates. What you need to do is figure the slope if the line did pass through (1, 3) and the slope if the line did pass through (2, 3), then the actual slope can be anywhere in between.
If the line ran through the points (-1, 1) and (1, 3), then the slope would be rise over run or: (3-1) / (1- -1) = 2 / 2 = 1. So the slope of that line would be 1.
If the line ran through the points (-1, 1) and (2, 3), then the slope
would again be rise over run or: (3 – 1) / (2 - -1) = 2 / 3. So the
slope of that line would be 2/3.
Your answer can be anywhere
in between (but not including) 2/3 and 1.