Answer: D. 1/8
Step-by-step explanation
The slope of the line can be calculated with:
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:
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