An umbrella and a pen are sold at a discount of 8% and 3% respectively . Calculate the overall percentage discount offered on the two commodities , if the cost of the umbrella is four times that of the pen.​

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

The answer is that the rate of change is $50 per 1 monthhope this ; )