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Write the equation of the line perpendicular to y=-2x+5 and passes through the point (-4;5)?

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Write the equation of the line perpendicular to...

this is part of my final...please help
HOW CAN YOU TELL THAT THE TWO LINES ARE PERPENDICULAR JUST BY THE SLOPES?

perpendicular lines

asked Jan 17, 2012 in Geometry Answers by anonymous

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1 Answer

perpendicular lines have opposite reciprocal slopes. the slope in your equation is -2 so us 1/2 as the slope for the new equation

y - 5 = 1/2 (x + 4)

y - 5 = 1/2x + 2

y = 1/2x + 7

answered Jan 17, 2012 by Kmartin Level 5 User (11.9k points)

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