Respuesta :

Answer:

Step-by-step explanation:

If two lines are parallel, their slopes (gradients) will be the same.

Ensure both line equations are in the format y = mx + b (where m is the slope and b is the y-intercept):

Line L1:  y = 2x + 5

Line L2:  2y - 4x = 6

          ⇒ 2y = 4x + 6

            ⇒ y = 2x + 3

As the slopes of L1 and L2 are both 2 and therefore the same, this proves that the two lines are parallel.