Find the​ slope-intercept form for the line passing through ​(​2,7​) and parallel to the line passing through ​(3,8​) and ​(-3​,​4).

The​ slope-intercept form for the line passing through ​(​2,7​) and parallel to the line passing through ​(3​,8​) and ​(​-3,4​) is y = ___
​(Simplify your answer. Use integers or fractions for any numbers in the​ expression.)