Name: _____________________________________________________________
Block: __________
Determine whether each relation is a function.
1. {(9,5), (0, −4), (6, 5), (3, − 9)}
3.
2. {(−7, − 3), (−1, 6), (−7, 9), (8, 17)}
4.
5.
Write a function rule from each table or graph.
6.
7.
8.
9.
10. When the input of the function is −3, what is the output?
11. The amount of gas a car uses is modeled by 𝑦 =
1
𝑥,
15
where 𝑦 is the number of gallons of fuel used, and 𝑥 is the
miles traveled. The chart shows the distance traveled by a truck and the amount of fuel used for each distance
the truck travels.
Which vehicle gets more miles per gallon, and how many more
does that vehicle get than the other vehicle?
a. The car; getting 15 miles per gallon more than the truck
b. The car; getting 3 miles per gallon more than the truck
c. The truck; getting 12 miles per gallon more than the car
d. The truck; getting 3 miles per gallon more than the car
12. Mack and Yvonne are building towers with clay. The height of Mack’s tower over time is shown in the table.
The height of Yvonne’s tower over time is shown in the graph.
Whose tower is growing faster, and how much taller is that tower getting every minute?
a. Mack’s tower; 1.6 inches per minute
b. Mack’s tower; 8 inches per minute
c. Yvonne’s tower; 1 inch per minute
d. Yvonne’s tower; 5.6 inches per minute