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17 votes
17 votes
Please help!! ;-; I cannot figure this out

Please help!! ;-; I cannot figure this out-example-1
User Dangelsaurus
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2 Answers

26 votes
26 votes
Check out the attached photo
Please help!! ;-; I cannot figure this out-example-1
User Marsad
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3.2k points
27 votes
27 votes

to get the equation of any straight line, we simply need two points off of it, let's use the points from the table in the picture below.


(\stackrel{x_1}{2}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{1}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{1}-\stackrel{y1}{4}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{2}}} \implies \cfrac{ -3 }{ 3 }\implies -1


\begin{array} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{4}=\stackrel{m}{-1}(x-\stackrel{x_1}{2}) \\\\\\ y-4=-x+2\implies {\LARGE \begin{array}{llll} y=-x+6 \end{array}}

Please help!! ;-; I cannot figure this out-example-1
User TheLazyChap
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2.9k points