Question 1099195
use the general point-slope formula
{{{ ( y - (-3) ) / ( x - (-9) ) = ( 3 -(-3) ) / ( 9 -(-9) ) }}}
{{{ ( y + 3 ) / ( x + 9 ) = 6/18 }}}
{{{ y + 3 = ( 1/3 )*x + 3 }}}
{{{ y = (1/3)*x }}}
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check:
does it go through ( -9, -3 )
{{{ -3 = (1/3)*(-9) }}}
{{{ -3 = -3 }}} 
OK
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