Hi there!
Slope intercept form is y = mx + b
So, what we have to do here is just get y, on the left side of the equation, alone.
So we can divide both sides by 2, and we get y = 4 + 2x.
Then all we have to do is move the right side around to get mx to come before b, and we get y = 2x + 4.
I hope I helped!