I'm going to say that it is y = -2x+8. Here's where I got that. I took the equation you gave me and multiplied it out using the distributive property on the right side. That got me y+2 = -2x + 10. Then, I subtracted the two from the left side and then subtracted the two from the right side. That left me with y = -2x + 8. Hope this helps.
