determine the slope of the line.

Explanation:

Step1: Select two points on the line

Let's take the points $(0, 1)$ and $(1, - 2)$.

Step2: Use the slope - formula

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 0,y_1 = 1,x_2=1,y_2=-2$. Then $m=\frac{-2 - 1}{1 - 0}$.

Step3: Calculate the slope

$m=\frac{-3}{1}=-3$.

Answer:

$-3$