Respuesta :

[tex]\begin{gathered} x_1=0,y_1=2,x_2=4,y_2=0 \\ \text{rate of change=}\frac{y_2-y_1}{x_2-x_1} \\ =\frac{0-2}{4-0}=-\frac{2}{4} \\ =-\frac{1}{2} \end{gathered}[/tex]