Question 947421
{{{ax+by=1}}}
When {{{x=0}}},
{{{b(4/5)=1}}}
{{{b=5/4}}}
When {{{y=0}}},
{{{a(2)=1}}}
{{{a=1/2}}}
So then,
{{{(1/2)x+(5/4)y=1}}}
{{{(5/4)y=-(1/2)x+1}}}
{{{highlight(y=-(8/5)x+4/5)}}}