The constant of proportionality of the graph can also be called the slope.
To find the constant of proportionality, apply the slope formula:
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
Take the points on the like:
(x1, y1) ==> (-5, -1)
(x2, y2) ==> (5, 1)
Substitute values into the slope formula:
[tex]\begin{gathered} m=\frac{1-(-1)}{5-(-5)} \\ \\ m=\frac{1+1}{5+5} \\ \\ m=\frac{2}{10} \\ \\ m=\frac{1}{5} \end{gathered}[/tex]
Therefore, the constant of proportionality of the line is ⅕
ANSWER:
[tex]\frac{1}{5}[/tex]
