To represent \( g \neq 7 \) on a number line, you would use a hollow circle at 7 to indicate that 7 is not included in the solution set. You would also have arrows extending to the left and right from the hollow circle at 7 to show that all other values (less than 7 and greater than 7) are included.
So the correct representation is:
Hollow circle at 7, with arrows extending to the left and right.