Solve the system of equations.
y=4x - 4
y=5x

x = -4

y = -20

Step-by-step explanation:

Let's change the signs.

-y= 4 - 4x

y = 5x

ADDING UP:

0 = x + 4

x = -4

Now y is 5 times x or - 20

And then we can replace the value of x on equation (1) or (2) and we got:

And then we have our solutuon x = -4, y = -20

Step-by-step explanation:

For this case we have the following system of equations:

   (1)

  (2)

And we can solve this system of equation using the method of elimination for example or we can set equal both equation since both are equal to y, like this:

Now w can subtract 4x from both sides and we got:

And then we can replace the value of x on equation (1) or (2) and we got:

And then we have our solutuon x = -4, y = -20