What is the slope of the line perpendicular to ?
Answer and explanation
Correct answer: D.
- Step 1: Convert to slope-intercept form: . The slope is .
- Step 2: The slope of a perpendicular line satisfies .
- Step 3: Compute .
Answer
.
Why not the others: '' is the negative reciprocal without the minus sign; '' is the negative of the original slope without taking the reciprocal; '' is the slope of a parallel line.
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