Question 956564
(x,5) (-3,6); slope = -1
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The slope = [ change in y ] / [ change in x ]
{{{ ( 6 - 5 ) / ( -3 - x ) = -1 }}}
{{{ 1 / ( -( 3+x )) = -1 }}}
{{{ 1 = -1*( -( 3 + x ) ) }}}
{{{ 1 = 3 + x }}}
{{{ x = -2 }}}
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check:
{{{ ( 6 - 5 ) / ( -3 - x ) = -1 }}}
{{{ ( 6 - 5 ) / ( -3 -(-2) ) = -1 }}}
{{{ 1 / ( -3 + 2 ) = -1 }}}
{{{ 1 / (-1) = -1 }}}
{{{ 1 = (-1)*(-1) }}}
{{{ 1 = 1 }}}
OK