Algebra 1
6.3 Applying Linear Functions Notes
Interpreting Linear Graphs:
1. A sporting goods store sells cans of tennis balls. There are 3 tennis balls in each can. The coach of the tennis
team is buying supplies. Write a linear function that relates the number of cans to the total number of tennis balls.
Graph the function that models the situation.
2. A) Suppose you drew the following graph to represent how far you ride your bike at a steady rate. What is your
rate?
B) If the graph had a slope of 10, what could you conclude about your biked ride?
3. Clothing connection and Teen Word are having sales. The graphs show the discounted price as a function of the
original price for merchandise from each shop.
a. Which store has a greater discount? Explain.
b. Write a linear function to model the situation in each store.
c. A customer buys merchandise originally priced at $16 from each store. What is the discounted price at each
store?
4. The table shows the average height of female infants.
a. Write a linear function using the data for 3 and 9 month old girls.
b. Use your model to find the height of a 15 year old girl, to the nearest foot.
c. Based on your answer, what can you conclude about the linear model?