Sometimes, selecting objects on the graphs reveals additional information, such as the coordinates of a point, the slope of a line, or the x$-$ and y$-$intercepts. Be careful when interpreting these values, however, because they do not take into account the units of the axes,For example, you can select the coordinates of the black point $($plus symbol$)$ you placed on the graph previously to see that the intersection of the curves occurs at the point representing a quantity ofboxes.