Answer:
x = 0 and y = 4
Explanation:
To solve, we can substitute x + 4 for y in the equation y = 2x + 4.
y = 2x + 4
x + 4 = 2x + 4
Now we can use the inverse operation of addition and subtract 2x from each side of the equation.
x + 4 - 2x = 2x + 4 - 2x
Combine like terms.
-x + 4 = 4
Then we would subtract 4 from each side of the equation.
-x + 4 - 4 = 4
-x = 0
x = 0
Now that we know x = 0, we can substitute 0 for x in the equation y = x + 4
y = x + 4
y = 0 + 4
y = 4
