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anonymous
 4 years ago
how do i find an equation of the line ? so it needs to be parallel to y=2x+3, through the point 3,1. how do i do this?
anonymous
 4 years ago
how do i find an equation of the line ? so it needs to be parallel to y=2x+3, through the point 3,1. how do i do this?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Parallel means that the k values are the same. y=2x+3, here the k value is 2. We know the or line has to look like this: y = 2x + c We also know that it goes through the point 3,1. We replace the x and the y 1 = 2*3 + c 1 = 6 + c 5 = c Now: y = 2x  5 http://www.wolframalpha.com/input/?i=y+%3D+2x++5+at+3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0say that the eqn is y=mx+c Since it is // to y=2x+3 m=2 Applying (3,1) 1=2*3+c c=5 y=2x5

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so you found c then placed it in the original equation?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks. is that just for when they are parallel that you use the plus c method? what is the equation for this method so i can use it on other problems?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0what if it is perpendicular and what is the equation please?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0If y=2x+3 is given as perpendicular to the line then ur m will b 1/2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0If two lines are perpendicular then m1*m2=1 If two lines are parallel then m1=m2
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