Question 1161035
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<pre>

With the given coordinates, the slope is equal to

    {{{(2-(-7))/(1-x)}}},    or     {{{9/(1-x)}}} 



According to the condition, the slope is 3.



It gives you THIS equation

     {{{9/(1-x)}}} = 3.


Cross multiply and simplify

    9 = 3*(1-x)

    9 = 3 - 3x

    3x = 3 - 9 = -6

     x         = {{{-6/3}}} = -2.     <U>ANSWER</U>
</pre>

Solved.


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At this site, &nbsp;there is a group of lessons related to this class of problems

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&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/Equation-for--a-straight-line-having-a-given-slope-and-passing-through-a-given-point.lesson>Equation for a straight line having a given slope and passing through a given point</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/Solving-problems-related-to-the-slope-of-a-straight-line.lesson>Solving problems related to the slope of a straight line</A>

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&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/Equation-for--a-straight-line-parallel-to-a-given-line-and-passing-through-a-given-point.lesson>Equation for a straight line parallel to a given line and passing through a given point</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/Equation-for--a-straight-line-perpendicular-to-a-given-line-and-passing-through-a-given-point.lesson>Equation for a straight line perpendicular to a given line and passing through a given point</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/Advanced-problems-on-finding-equations-for-straight-lines-.lesson>Advanced problems on finding equations for straight lines</A> 


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/geometry/OVERVIEW-of-lessons-related-to-the-slope-of-a-straight-line.lesson>OVERVIEW of lessons related to the slope of a straight line</A> 


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