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Choose the equation of the line passing through the point (1, 2) and perpendicular to y = 1/4x + 2.
y = 4x  6
y = 4x  6
y = 4x + 2
y = 4x
 one year ago
 one year ago
Choose the equation of the line passing through the point (1, 2) and perpendicular to y = 1/4x + 2. y = 4x  6 y = 4x  6 y = 4x + 2 y = 4x
 one year ago
 one year ago

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whpalmer4Best ResponseYou've already chosen the best response.1
For two lines to be perpendicular, the product of their slopes must equal 1. The known line is in the slopeintercept form: \(y = mx + b\) where \(m\) is the slope and \(b\) is the yvalue of the yintercept. Use the slope to find the slope of the perpendicular line. Then use the known point to find the value of \(b\) for the perpendicular line.
 one year ago

charlotte123Best ResponseYou've already chosen the best response.0
@whpalmer4 so would the answer be a? :P
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.1
Well, what's the slope of the known line, and what's the slope of the line in a)? If you multiply them together, what do you get?
 one year ago

charlotte123Best ResponseYou've already chosen the best response.0
wait a sec I got this wrong >.> can u help me out? :(
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.1
That's why I'm here :)
 one year ago

charlotte123Best ResponseYou've already chosen the best response.0
XD so how do I start? :) this is a pretest, so I dont really know how to solve it or anything D:
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.1
Okay, look at my first post, where I describe the slopeintercept form. Now look at the equation in the question, and compare them. What is the coefficient of x in the equation? That will be the slope of the line.
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.1
(the original line, that is)
 one year ago
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