Line q has a slope of one half and crosses the y axis at 3. line s has a slope of one half and crosses the y axis at negative 2. how many solutions are there for the pair of equations for lines q and s?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?