Answer:
s = 3x - (1/2)y
Step-by-step explanation:
The perimeter of a square is 4s, where s is the side length. Here,
12x - 2y = 4s, and so s = 3x - (1/2)y
It would be: 4 2/7 * 2 1/5
= 30/7 * 11/5
= 330/35
= 66/7
In short, Your Answer would be 66/7 or 9 3/7
Hope this helps!
The formula is y=mx + b, or rearranged would be m= y/x -b/x.