y = 0: 35, 40, 45, 50, 55, 60, â€¦

y = 1: 39, 44, 49, 54, 59, â€¦

y = 2: 38, 43, 48, 53, 58, â€¦

y = 3: 37, 42, 47, 52, 57, â€¦

y = 4: 36, 41, 46, 51, 56, â€¦

That's all integers >= 35.

You could also probably build a more formal proof using \(\displaystyle mod 5\), but the above should be sufficient.