ahhh easy:) all we have to do is plug in y sooo this question becomes 2x + x + 3 = 9 we add the xs and they become 3x soooo 3x + 3 = 9 now subtract 3 from both sides 3x +3 = 9 - 3 = -3 they cancel out on the left hand side and the right side of the equal sign becomes a 6 sooooo 3x = 6 divide both sides by 3 3x = 6 ÷3 = ÷ 3 the 3s on the left side cancel out and the right side becomes 2 sooooo x = 2 but before we can answer this completely we plug it into our first equation soooo y = x + 3 to this y = 2 + 3 so y = 5 x = 2 y = 5 coordinates? (2, 5)
