Question 891867
Use the general point-slope formula:
( -3,-3 ) , ( 2,1 ) 
{{{ ( y -( -3 ) ) / ( x -( -3 ) ) = ( 1 -(-3) ) / ( 2 -(-3 )) }}}
{{{ ( y + 3 ) / ( x + 3 ) = ( 1 + 3 ) / ( 2 + 3 ) }}}
{{{  ( y + 3 ) / ( x + 3 ) = 4 / 5 }}}
{{{ y + 3 = ( 4/5)*( x + 3 ) }}}
{{{ y + 3 = ( 4/5 )*x + 12/5 }}}
{{{ y = ( 4/5 )*x + 12/5 - 15/5 }}}
{{{ y = ( 4/5 )*x - 3/5 }}}
------------------------
check:
( -3,-3 )
{{{ y = ( 4/5 )*x - 3/5 }}}
{{{ -3 = ( 4/5 )*(-3) - 3/5 }}}
{{{ -3 = -12/5 - 3/5 }}}
{{{ -3 = -15/5 }}}
{{{ -3 = -3 }}}
OK
You can check the other point