Question

question 13
what is the slope of a horizontal line?
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Explanation:

Step1: Recall slope formula

Slope is defined as $\frac{\Delta y}{\Delta x} = \frac{y_2 - y_1}{x_2 - x_1}$

Step2: Analyze horizontal line points

For a horizontal line, all $y$-values are equal, so $y_2 = y_1$.

Step3: Calculate slope

Substitute into formula: $\frac{y_1 - y_1}{x_2 - x_1} = \frac{0}{x_2 - x_1} = 0$

Answer:

0 (Option: 0)