Question

1. slope: slope:

Explanation:

Step1: Select two points on the line

Let's take the points $(1,16)$ and $(5,8)$.

Step2: Use the slope - formula

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 1,y_1 = 16,x_2 = 5,y_2 = 8$.
$m=\frac{8 - 16}{5 - 1}=\frac{-8}{4}=-2$.

Answer:

$-2$