Question

Solve each system using subtraction.
y = x + 4
y = 3x
Would it be 3x = x + 4? I have that written down, but then I don't know what to do after that.

Answer 1

so you're solving for x & y?

Answer 2

Yea, it would be 3x=x + 4. After that, solve for x! Do you understand how you got to 3x = x + 4?

Answer 3

3x=x+4
3x-x=4
2x=4
x=2

Sub x=2 in y=3x

y=3(2)
y=6
so x=2 and y=6