Question 247960
The standard Slope-Intercept Form of a Line looks like this: {{{y=mx+b}}}
Therefore, you need to re-arrange your equations in this order to answer the question.


{{{3x-4y=80}}}
{{{-4y=-3x+80}}}
{{{y=(-3x/-4)+(80/-4)}}}
{{{y=(3/4)x-20}}}  <--- here's your first problem solved.


Can you do the second one?  {{{2x+3y=90}}}


Steps:
1.  Deduct 2x from both sides of equation.
2.  Divide by 3 on both sides of the equation.
3.  Simplify.
4.  Ensure you have all terms in the correct order.


Done!