SOLUTION: What is an equation of the line that passes through the point (-2, 5) and is perpendicular to the line whose equation is y = 1/2x + 5? 1. y = 2x + 1 2. y = -2x + 1 3. y = 2

Algebra ->  Algebra  -> Length-and-distance -> SOLUTION: What is an equation of the line that passes through the point (-2, 5) and is perpendicular to the line whose equation is y = 1/2x + 5? 1. y = 2x + 1 2. y = -2x + 1 3. y = 2      Log On

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Question 408016: What is an equation of the line that passes through the point (-2, 5) and is perpendicular to the line whose equation is y = 1/2x + 5?
1. y = 2x + 1
2. y = -2x + 1
3. y = 2x + 9
4. y = -2x - 9

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Parallel lines have slopes that are negative reciprocals so you can eliminate two of the answers immediately. Of the remaining two answers, only one of them forms a true statement if you substitute the coordinate values of the point through which the perpendicular must pass.

John

My calculator said it, I believe it, that settles it
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