Question

1. slope: __

Explanation:

Step1: Recall slope formula

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$, where $(x_1,y_1)$ and $(x_2,y_2)$ are two points on the line.

Step2: Identify two points on the line

Let's take two points on the given horizontal line, say $(1,7)$ and $(5,7)$.

Step3: Substitute into slope formula

$m=\frac{7 - 7}{5 - 1}=\frac{0}{4}=0$.

Answer:

$0$