Graphs can help us find unit rates by showing the relationship between two quantities. When one quantity is plotted on the [katex] x [/katex]-axis and the other on the [katex] y [/katex]-axis, the unit rate can be found by identifying the slope of the line, which represents how much the [katex] y [/katex]-value changes for each increase of one unit on the [katex] x [/katex]-axis.