### 8-1: TEKS Practice

• 1. Find the rate of change for the linear function y = − 9x + 8.

• 2.

• a. Writing Find the rate of change of the linear function from the point (2, 14) to the point (17, 4). • b. Show how you found the rate of change. Then describe a situation that this graph could model.

• 3. The money, y, pizzeria W makes selling x pizzas can be modeled by the equation y = 14x. The relationship of the money pizzeria J makes is shown in the following graph. Which pizzeria makes more money per pizza? • 4. A supervisor took several minutes to count the number of items at the end of an assembly line. The table shows the number of items at the end of each minute. (Figure 1)

• a. What is the rate of change of the number of items between minute 3 and minute 5?

• b. What does the rate of change mean in this situation?

• 5.

• a. Multiple Representations What is the equation of the linear function? • b. What is the rate of change?

• c. List the values that complete the table.  End ofPage 284