Question 80388
8x – 4y = 16
y = 2x – 4

First get all variables on one side and have the numbers only on the other

8x - 4y = 16
-2x + y = -4

Next multiply your second equation by 4 to get both y opposite of eachother in order to cancel

Now you will have
8x - 4y = 16
-8x + 4y = -16

Which will all cancel and leave you with no real solution