Question 1027300
You made use of the point-slope formula
What you needed is the GENERAL point-slope formula:
( -3, -5 )
( -1, -4 )
{{{ ( y -(-5 )) / ( x -(-3)) = ( -4 -(-5) ) / ( -1 -(-3) ) }}}
{{{ ( y + 5) / ( x + 3 ) = ( -4 + 5 ) / ( -1 + 3 ) }}}  
{{{  ( y + 5) / ( x + 3 ) = 1 / 2 }}}
Multiply both sides by {{{ 2*( x+3 ) }}}
{{{ 2*( y + 5 )  = x + 3 }}}
{{{ 2y + 10 = x + 3 }}}
{{{ 2y = x - 7 }}}
{{{ y = (1/2)*x - 7/2 }}}
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check answer:
( -3, -5 )
{{{ y = (1/2)*x - 7/2 }}}
{{{ -5 = (1/2)*(-3) - 7/2 }}}
{{{ -5 = -3/2 - 7/2 }}}
{{{ -5 = -10/2 }}}
{{{ -5 = -5 }}}
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( -1, -4 )
{{{ y = (1/2)*x - 7/2 }}}
{{{ -4 = (1/2)*(-1) - 7/2 }}}
{{{ -4 = -1/2 - 7/2 }}}
{{{ -4 = -8/2 }}}
{{{ -4 = -4 }}}
OK