to add to that, you just need to evaluate the slopes (m). In order to find the slope, you need to know that m=rise/run, or y/x. You can find the difference in y and the difference in x by looking at the coordinates the lines pass through. For example, line k has a difference in y of 2 (as 4-2=2), and a difference in x of 8 (as 4- (-4))=4+4=8). therefore, the slope would be 2/8, or 1/4, for line k. If line h has the same slope, they are parallel. Hope this helps!