How do I do this? (8:1); 2y+4x=12

Answer 1

If you mean by (8:1) that x = 8y then just plug that into the equation to get

2y + 4(8y) = 12

2y + 32y = 12

34 y = 12

y = 12/34 = 6/17

x = 8y = 8(6/17) = 48/17

Answer 2

I'm going to take a wild guess here.

I think you meant (8,1). Are you trying to see if it's a point or the solution to the line? If so, it's not.

(8,1) is the (x-value, y-value).

Plug the 8 in for x & the 1 in for y.

So, you will have 2(1) + 4(8) = 12.

2(1) = 3 & 4(8) = 32, so 2(1)+4(8) = 35.

35 does not equal 12.

Therefore, the point is not on the line. Therefore, it's not a solution.

Hope this helps!