The mileage is the independent variable. You can control it. The gasoline remaining DEPENDS ON the number of miles different. That's why it's called the dependent variable. It's change depends on the change in the independent variable
B is correct. Explanation Below: --- Line A never intersects Line B, as they are parallel lines-the slopes are the same-and parallel lines never intersect. Line A's Slope: (9-5)/(-1-1) = -2 Line B's Slope: (-6-2)/(4-0) = -2 --- Hope this helps!