Show that the equation [[$ \displaystyle\frac {y_1} {x_1} = \displaystyle\frac {y_2} {x_2} $]] can be converted into [[$ \displaystyle\frac {y_1} {y_2} = \displaystyle\frac {x_1} {x_2} $]].

Take a picture of your solution and return it to the submission folder.