Question 1123396
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Find the equation of the line with the given properties.  Express the equation in general form or​ slope-intercept form. -2x+y=-21 contains the points (6,-10)

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Something is missing.  
Do you want the line PERPENDICULAR, or the one PARALLEL to  {{{-2x+y=-21}}};
(and containing point  (6,-10) ?)



THE LINE PARALLEL
{{{-2x+y=-2*6-10}}}
simplify this.


THE LINE PERPENDICULAR
{{{x+2y=6+2(-10)}}}
simplify this.