3. Fabulous Frames sells square frames of different sizes. The table shows the length of one side of each frame and the material required for the perimeters of each frame. Length of one side in cm Perimeter in cm 74 7 10 28 40 12 15 20 48 60 80 a) Determine the independent and dependent variables. Name them x and y, respectively. b) Write a formula showing the relationship between x and y. c) Plot the points and draw the graph of perimeter against length of​
