Linear Equations and Models

Which of the following situations could be descried by the equation y=120-25x?

• There are 120 people in the football stadium, and 25 more are entering each hour.
• A plumber charges $25 for a house call and $120 per hour.
• A teacher has 120 students. Her third period has 25 students
• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Tags

CCSS.6.EE.C.9

Which statement below accurately represents the graph?

• $100 is earned for each hour worked
• $100 is earned for every 2 hours worked
• $500 is earned for every 8 hours worked
• $400 is earned for every 6 hours worked

Tags

CCSS.8.EE.B.5

The GPA of a student can be predicted using the equation
G(h) = 1.4h + 1.4  where h is the hours the student spends studying.  How many hours did a student spend studying if they have a GPA of 4.2?

• 4
• 3
• not enough information
• 2

Tags

CCSS.7.EE.B.4A

The GPA of a student can be predicted using the equation
G(h) = 1.4h + 1.4  where h is the hours the student spends studying.  What is the expected GPA of a student that spends no hours studying?

• 2.4
• 1.4
• not enough information
• 2.8

Tags

CCSS.HSF.LE.B.5

The GPA of a student can be predicted using the equation
G(h) = 1.4h + 1.4  where h is the hours the student spends studying.  What is the expected GPA of a student that spends no hours studying?

• 2.4
• 1.4
• not enough information
• 2.8

Tags

CCSS.HSF.LE.B.5

The cost of hiring a private tutor is modeled by the function C(n)=32n+20. What does 20 represent in this model?

• Price per hour
• Flat fee to hire tutor
• Maximum number of hour you can hire the tutor
• I don't know what it means

Tags

CCSS.HSF.LE.B.5

The cost of hiring a private tutor is modeled by the function C(n)=32n+20. How many hour did the tutor work to earn $212?

• 4 hours
• 6 hours
• 5 hours
• 7 hours

Tags

CCSS.HSF.LE.B.5

What is a scatter plot?

• A graph that shows the relationship of two data sets.
• A graph drawn using rectangular bars to show how large each value is.
• A graph that shows information that is connected in some way.
• A graph that shows data changing over time.

Tags

CCSS.8.SP.A.1

What would be the correlation between study time and test grades?

• positive

• negative

• none

• cannot be determined

Tags

CCSS.HSS.ID.C.9

What is the type of relationship?

• Negative 
• No Relationship
• Positive
• Constant 

Tags

CCSS.HSS.ID.B.5