How can you check if drew the right graph 1. by looking at the slope 2. looking at the intercepts 3. by taking random points on your graph by using this equation 2x+6y=18

If [ 2x + 6y = 18 ] was the equation you were supposed to graph, then #3 is the way to go. If it was some other equation, then you would have to slog through BOTH #1 and #2 tobe sure.