Answer:
B. 
Step-by-step explanation:
The inequality "B" is correct because when you simplify it, you can see that it holds true:

49 > 29
49 is indeed greater than 29, making this inequality true.
I believe it A because it on the negative side of the graph
All that's necessary is to add 4 to both sides of the equation. This gives
... y = 1/2(x -8) +4
If you like, you can simplify this by eliminating the parentheses and collecting terms.
... y = 1/2·x -4 +4
... y = (1/2)x