are these functions for open address hashing, proper?

I want to use these two functions in two hash-tables with open-addressing. Is there any problems with these functions? If yes, why they are not appropriate?

H(k,i) = (k mod m + 3i mod m) mod m

H(k,i) = (k^2 + 2k + i(k mod m)) mod m

• Something is missing in your second equation. Please proof-read your question and edit it to correct issues. – D.W. May 31 '17 at 1:29
• Did you test them? – Pseudonym May 31 '17 at 2:45
• @Pseudonym No. I haven't implemented the Hash. – Ju Bc May 31 '17 at 2:48
• You should test it on some data set which is representative of the expected key distribution. – Pseudonym May 31 '17 at 6:01