1. find the slope of the line.

Explanation:

Step1: Identify two points

Let the two points on the line be $(-3, 2)$ and $(3, - 2)$ (by observing the grid - points on the line).

Step2: Use slope formula

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1=-3,y_1 = 2,x_2 = 3,y_2=-2$. Then $m=\frac{-2 - 2}{3-(-3)}$.

Step3: Simplify the expression

$m=\frac{-4}{6}=-\frac{2}{3}$.

Answer:

$-\frac{2}{3}$