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question 10
find the slope of the line through each pair of points.
(-1, -11), (-1, -8)

Explanation:

Step1: Recall slope formula

The slope \( m \) between two points \((x_1, y_1)\) and \((x_2, y_2)\) is \( m=\frac{y_2 - y_1}{x_2 - x_1} \).

Step2: Identify coordinates

Here, \( x_1=-1, y_1 = - 11 \), \( x_2=-1, y_2=-8 \).

Step3: Substitute into formula

Substitute into the slope formula: \( m=\frac{-8 - (-11)}{-1 - (-1)}=\frac{-8 + 11}{-1 + 1}=\frac{3}{0} \).
Division by zero is undefined, so the slope is undefined.

Answer:

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