Find the value of x in the system, using substitution

y=2x; 4x-y=-4

x=-2

y=-4

Step-by-step explanation:

y=2x;

4x-y=-4

Substitute y = 2x into the second equation

4x - (2x) = - 4

4x - 2x = - 4

Combine like terms

2x = - 4

Divide by 2

2x/2 = - 4/2

x=-2

Now we need to find y

y = 2x

y = 2 (-2)

y=-4