Slope Interest Relationship

In the graph, x represents time in seconds, and y represents the number of pages printed by a printer. Which statement best describes the rate of change for this situation?

• The number of pages printed increases 4 pages per second.

• The number of pages printed increases 2 pages per second.

• The number of pages printed increases 1 page per second.

• The number of pages printed increases 0.5 page per second.

The value of a certain stock in the stock market is tracked for several days. The information is presented in the graph. Which prediction can be made based on the data?

• On day 10, the stock should have a value of approximately $20.

• On day 12, the stock should have a value of approximately $23.

• On day 10, the stock should have a value of approximately $30.

• On day 12, the stock should have a value of approximately $36.

The scatterplot below represents the heights and weights of a group of people. Based on the trend line, what would be the weight of a person who is 72 inches tall?

• About 180 lbs

• About 163 lbs

• About 153 lbs

• About 145 lbs

Brenda lit a candle in her kitchen and recorded how long it took the candle to burn completely. She displayed her data in the graph below. What are the slope and the y-intercept of Brenda’s graph?

• Slope = 1/3 ; y-intercept = 7

• Slope = –3; y-intercept = 21

• Slope = –1/3; y-intercept = 21

• Slope = –1/3; y-intercept = 7

• A plane ride costs $0.136 (13 cents)

• For every 1 mile flown, the cost goes up  $ 0.136 dollars (13 cents)

• For every 1 mile flown, the cost goes up $74

• A
• B
• C
• D

• A
• B
• C
• D

• For every 160 meters in elevation there's a decrease of 1 Celsius in temperature

• For every meter of elevation there's a decrease of 1 Celsius in temperature 

• For every  160 meters in elevation there's an increase of 1 Celsius in temperature

• For every 22.5 meters there's a decrease of 1/160 Celsius in temperature.

• A
• B
• C
• D

If the line of best fit shows the relationship between elevation and average annual temperature in celsius, what does the slope represent? Assume the line of best fit is represented by the equation

• For every 160 meters in elevation there's a decrease of 1 Celsius in temperature

• For every meter of elevation there's a decrease of 1 Celsius in temperature 

• For every  160 meters in elevation there's an increase of 1 Celsius in temperature

• For every 22.5 meters there's a decrease of 1/160 Celsius in temperature.