Question 52897
Before doing any substitutions for x or y, solve the equation for y.  This is a good tip: always, always, always... solve for y first!  So in our equation of {{{5x+y=-10}}} to solve for y, let's subtract 5x from both sides:  {{{y=-5x-10}}}.  Now you can substitute some values of x to determine your ordered pairs.  Using x=0, gives us an ordered pair of (0,-10).  Using x=-2, gives us an ordered pair of (-2,0).  Just plot these two points and connect with a straight line to get our graph!  It looks like this:
{{{graph(300,300,-5,5,-20,10,-5x-10)}}}