Sorry but where is the picture? I’m confused..
The answer is C. y= 3/2 x. You can check by multiplying 3/2 by 3, if you get 7, it is correct

Solution:
Given equation is
.
To solve the equation by step by step.
Step 1: Given

Step 2: Combine like terms together.
Plus symbol changed to minus when the term goes from right to left (or) left to right of the equal sign.

Step 3: Subtract the fractions in the left side.

⇒ 
Step 4: Divide both side of the equation by 3, we get


Hence, the answer is
.