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39 votes
Through: (3-2), Perpendicular to y = 3×+ 3

User RickyM
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1 Answer

24 votes
24 votes

if the line is perpendicular to:


y=3x+3

then we know that the slope will be the negative reciproc of 3 so:


m=-(1)/(3)

Now we use this equation to find the intercept in the y axis:


m=(y-y_1)/(x-x_1)

we replace the slope, the coordinate (3,-2) and x=0 so:


\begin{gathered} -(1)/(3)=(y-(-2))/(0-3) \\ (3)/(3)=y+2 \\ 1-2=y \\ -1=y \end{gathered}

So the final equation will be:


y=-(1)/(3)x-1

User Sorenhk
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