15 !
write and solve an equation for the problem in the picture below

You have to add the numbers: if the opposing team has 72 points, your team has 13 points more. That means that your team has 72+13 points, which is 86 points. 

You would need a laid out graph for this but could you provide a picture of just a graph? i can give stepssolve for y.subtract 4xdivide by -1 (opposites)graph slope intercept formcheck each point to see if it’s on the graph