Rate of Change and Y Intercept

Who has the greater rate of change?

• CJ has a greater rate of change with 13/2

• Holland has a greater rate of change with 6

• CJ has a greater rate of change with 2/13

• They have the same rate of change.

Who has the greater rate of change?

• Troy has the greater rate of change.

• Lucy has the greater rate of change 

• They have the same rate of change

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change?

• 75 ft/h

• 0.013 ft/h

• 116.7 ft/h

• 200ft/h

Who has the greater rate of change?

• Smith has the greater rate of change.

• Harmon has the greater rate of change.

• Macey has the greater rate of change.

• They have the same rate of change

The weight of Brandi's luggage is represented by the equation y = 40x, where y represents the weight in lbs and x represents the number of bags. The weight of Javier's luggage is represented in the graph. Compare their rates.

• Brandi's luggage weighs more because it weighs 40 lbs per bag.

• Javier's luggage weighs more because it weighs 40lbs per bag.

• Brandi's luggage weighs more because it weighs 30 lbs per bag.

• Javier's luggage weighs more because it weighs 30 lbs per bag.

Who has the same rate of change?

​ (a)   have the same rate of change because they are both charged ​ $ (b)   per day, while ​ (c)   has a different rate of $​ (d)   per day.

• Dennis and Myriah

• 78

• Kameron

• 75

• 150

• 37.5

• Dennis

• Myriah

• Dennis and Kameron

• Myriah and Kameron

The cost of Melanie’s texting is shown in the table. The cost of Patrick’s monthly texting cost is described by the equation y = 0.3x + 5, where x is the number of texts and y is the cost. Whose texting rates are cheaper?

​ (a)   's texting rates are cheaper because ​$ (b)   per text is less than $​ (c)   per text.

• Melanie

• 0.25

• 0.30

• Patrick

• 1.25

• 0.03

• 0.75

• 0.04

• 0.40

• 0.55

What is the meaning of the y-intercept of this graph?

• when the gas take is empty

• starting amount of gas

• rate at which the gas take empties

• the starting mileage

An amusement park has an entrance fee, and then there is a cost to ride each ride. The total cost (y) can be modeled by y=1.5x+20 where x is the number of rides you ride. What does the y intercept represent?

• Number of rides

• The entrance fee

• The cost for food

• The cost per ride

At 10:00 pm, there was already 8.6 inches on the ground. If it is to snow 2 inches per hour after, what equation could be used to model the situation after x amount of hours.

• y = 2x + 8.6

• y = 2x - 8.6

• y = -2x + 8.6

• y = 1/2x + 8.6