Question 259248
Use the point-slope form of a line with point (xp, yp) and slope m:
{{{y-yp=m(x-xp)}}}
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{{{y-(-6)=(6/7)(x-5)}}}
{{{y+6=(6/7)(x-5)}}}
{{{y=(6/7)x-30/7-6}}}
{{{y=(6/7)x-30/7-42/7}}}
{{{y=(6/7)x-72/7}}}
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 {{{drawing( 300, 300, -2, 8, -8, 2,grid( 1 ),circle( 5, -6, .2 ), graph( 300, 300, -2, 8, -8, 2, (6/7)x-72/7)) }}}