Problem
Find the slope, if it exists, of the line containing the pair of points \( (9,-4) \) and \( (-7,-4) \). Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The slope of the line is (Type an integer or a simplified fraction.) B. The slope is undefined
Solution
Step 1 ：1. Calculate the change in \(y \) coordinates: \( \Delta y = -4 - (-4) = 0 \)
Step 2 ：2. Calculate the change in \(x \) coordinates: \( \Delta x = 9 - (-7) = 16 \)
Step 3 ：3. Calculate the slope: \( m = \frac{\Delta y}{\Delta x} = \frac{0}{16} = 0 \)
