Answer: 
Step-by-step explanation:





Answer:
<em>B) -7x + 7y = -49</em>
Step-by-step explanation:
This is a y=x plot/line shifted by 7 units.
This can also be verified plugging in the values of x=0,y=-7 and x=7,y=0. The only equation which satisfies these points in Equation B. These points have been chosen as they're the intercepts of this plot.
Exact Form:
X=10/7
Decimal Form:
X=1.428571
Mixed Number Form:
X= 1 3/7