3B Independent Practice - STAAR REVIEW

1.The graph of a line is represented by the equation 6x - 8y = 48. Which value represents the rate of change of y with respect to x for the equation?

• -3/4

• -8/6

• 3/4

• -4/3

2.Teresa's parents decide to join a weight-loss program to lose some weight.

They have to pay based on

the amount of weight that they lose.

Using the graph, for what range of weight loss do they have to pay the lowest rate?

• 0 to 20 pounds

• 20 to 50 pounds

• 10 to 40 pounds

• 50 to 80 pounds

3.Calidad Electronics Inc. pays its employees by the formula, P(b)= 3/2b + 45, where P(b) is the

employee's total daily pay and b is the number of electronic boards inspected. According to the formula, what is the rate employees are paid per electronic boards inspected?

• $0.75

• $1.50

• $2.00

• $45.00

4.Samuel jogs around a 100-meter track at a steady pace. The linear equation y = 5x describes how many meters he has run after x seconds. Which of the following best describes the meaning of the slope of this equation?

• Samuel runs at a rate of 5 meters per second.

• Samuel runs at a rate of 1 meter every 5 seconds.

• Samuel runs at a rate of 20 meters per second.

• Samuel runs at a rate of 5 laps per second.

5.A savings account balance can be modeled by the graph of the linear function shown on the grid. What is the rate of change of the balance with respect to the number of deposits?

• $100 per deposit

• $50 per deposit

• $0.50 per deposit

• $2 per deposit

6.What is the rate of change of y with respect to x for this function?

7.The graph below shows the relationship between the number of dollars a worker earns and the number of hours worked. What does the slope of the graph represent?

• The number of hours of work it takes to earn $320

• The number of hours worked per dollar earned

• The amount of money earned per hour

• The amount earned for 40 hours of work

8.What is the rate of change of height off the ground with respect to the number of steps?

• 14 in. per step

• 7 in. per step

Tags

TEKS.MATH.8.4C

TEKS.MATH.A.3B

9.A worker is packing items in boxes. The table shows the linear relationship between the number of items the worker has packed in boxes after different amounts of time. Which statement describes the rate of change of the number of items the worker packed in boxes with respect to the number of minutes the worker has been packing items in boxes?

• The worker packed 8 items in boxes per minute.

• The worker packed 37 items in boxes per minute.

• The worker packed 4 items in boxes per minute.

• The worker packed 15 items in boxes per minute.

Tags

TEKS.MATH.A.3B