Question 37995
Parallel lines have the same slope.  If we put the lines in slope intercept form, y=mx+b, then m should be the same in both.  4y = ax+2, so y=(a/4)x+1/2.
1/5y = 1/4x+ 7, so y=(5/4)x+35.  So a/4=5/4, so a=5.