1. Skills Practice pg 265 – 270
A relation is a set of ordered pairs while a function is a special type of relation where each input has one unique output.
Domain is the set all inputs while range is the set of all outputs of a relation or function.
1) Yes, it is a function
2) Yes, it is a function
Yes, it is a function
Domain: years; Range: feet; avg of 6 year old tree ≈ 17.5 feet
Domain: years; Range: 1 – 9 inches; avg of 13 year old tree ≈ 7 inches
Domain: weeks; Range: 0 – 46 inches; after 11 weeks ≈ 22 inches
Domain: 0 – 300 days; Range: 28 – 48 inches; day 135 ≈ 46 inches
Domain: 5 – 18 people; Range: 15 – 50 minutes; 30 minutes wait ≈ 14 people
Domain: inches; Range: 0.5 – 1.2 lbs; diameter of 1 lb ≈ 3.75 inches

2. Average Height (inches)
Section 1.1 problem #1
Age
Average Height (inches)
6 months 26
12 months 30
18 months 34
2 years 36
3 years 39
4 years 42
5 years 44
6 years 47
7 years 49
8 years 51
9 years 53
10 years 55
11 years 57
12 years 59
13 years 61

7. Try problem 3 (Weight and Height) Homework Check tomorrow!!!!
questions 1 – 4 all!!!
Homework Check tomorrow!!!!