Question 1074825
Use point-slope formula
{{{ ( y - (-4) ) / ( x - 2 ) = -1 }}}
{{{ ( y + 4 ) / ( x - 2 ) = -1 }}}
{{{ y + 4 = -1*( x - 2 ) }}}
{{{ y + 4 = -x + 2 }}}
{{{ x + y = -2 }}}
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check:
does it go through ( 2,-4 ) ?
{{{ 2 +(-4) = -2 }}}
{{{ -2 = -2 }}}
OK