I don't know the equation of each line but here is how you do it:
Arrange each of their equations such that it becomes y=mx + c, where m and c are constants (they don't change and cannot vary).
Then, m, representing the slope (or gradient) will help you find the answer. The answer will be the line which has an m with a value greater than 1 anf les than 2.
Otherwise, if you don't have their equations, you can find their gradient (or slope) through the equation (y1 - y2)/(x1 - x2) where (x1, y1) and (x2, y2) are points on the same line. Do this for each of them and find each of their gradients/slopes before comparing them and finding the answer
Sorry I can't say much though, I don't know the equations of your lines and therefore cannot help very much
