Question

What is the slope of the line that contains the points (9,-4) and (1,-5)?O A. -B. 1C. -1D. /718

Answer 1

Answer: D. 1/8

Explanation

The slope of the line can be calculated with:

$m=\frac{y_2-y_1}{x_2-x_1}$

where (x₁, y₁) and (x₂, y₂) are the two points given. Then:

• x₁ = 9

,

• y₁ = –4

,

• x₂ = 1

,

• y₂ = –5

Thus, replacing the values and simplifying:

$m=\frac{-5-(-4)}{1-9}$$m=\frac{-5+4}{-8}$$m=\frac{1}{8}$