Question 421253
The y-intercept occurs where {{{x = 0}}}
{{{7y + 9x + 5 = 18 + 9x}}}
{{{7y + 9*0 + 5 = 18 + 9*0}}}
{{{7y + 5 = 18}}}
Subtract {{{5}}} from both sides
{{{ 7y = 13 }}}
{{{y = 13/7}}} 
The y-intercept is at (0,13/7)