Julia has been measuring the lengths of her baby's hair. The first time it was 6 cm long and after one month it was 2cm longer. If the hair continues to grow at this rate, determine the function that

Julia has been measuring the lengths of her baby's hair. The first time it was 6 cm long and after one month it was 2cm longer. If the hair continues to grow at this rate, determine the function that represents the hair and graph it