Question

• / 0.33 points the slope of a horizontal line is select--- -1 0 1 undefined he equation of the horizontal line passing through (8, 9) is resources read it

Explanation:

Step1: Recall the slope formula

The slope formula is \(m = \frac{y_2 - y_1}{x_2 - x_1}\). For a horizontal line, \(y_1=y_2\). So \(m=\frac{y - y}{x_2 - x_1}=0\).

Step2: Find the equation of the horizontal line

The equation of a horizontal line is of the form \(y = k\), where \(k\) is the \(y\) - coordinate of any point on the line. The line passes through \((8,9)\), so \(k = 9\). The equation is \(y=9\).

Answer:

The slope of a horizontal line is \(0\). The equation of the horizontal line passing through \((8,9)\) is \(y = 9\).