Question 63212
{{{ x+3y=4 }}}
get this in slope-intercept form
{{{ 3y =-1x + 4 }}}
{{{ y = -1x/3 + 4/3 }}}


If the new line is perpendicular to this one ... its slope is the opposite reciprocal of -1/3 .... +3
{{{ y = 3x + b }}}
plug in (-1,2)
{{{ 2 = 3(-1) + b }}}
solve for b
{{{ 2 = -3 + b }}}
{{{ 5 = b }}}


{{{ y = 3x + 5 }}}