Real World Linear Functions

A food service worker earns $12 per hour. How much money, m, does the worker earn on a shift of h hours? Identify the dependent variable.

• money

• hours

Sarah is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.

t = the total number of treats

s = the number of students

Which of the variables is independent?

• s

• t

• Bella

• Seth

• Neither

What is a possible scenario for the given table?

• You have $8 and get $5 more each day!

• You have $16 and get $2 more each day!

• You have $2 and get $6 more each day!

• You have $6 and get $2 more each day!

A strong cold front blew through during the night.  The temperature outside began to drop rapidly.  The graph shows the temperature at each hour after the cold front blew through.  What is the rate of change of the graph?

• 2.5°F per hour

• 0.2°F per hour

• -0.2°F per hour

• -2.5°F per hour

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

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

In the equation y=mx+b, what does the m represent?

• slope

• y-intercept

• linear

• point-slope

What is the slope in the equation y=2x + 3?

• 2

• 3

• 5

• Cannot be Determined 

Find the slope of the line.

• 1/2

• -1/2

• 2

• -2