Question 584272
{{{  9x + 7y = 63 }}}
Get it into the form {{{ y = m*x + b }}}
where {{{m}}} is the slope
Subtract {{{ 9x }}} from both sides
{{{ 7y = -9x + 63 }}}
Divide both sides by {{{7}}}
{{{ y = -(9/7)*x + 9 }}}
The slope is {{{ -(9/7) }}}
Here's the plot:
{{{ graph( 400, 400, -6, 10, -6, 12, -(9/7)*x + 9 ) }}}