Comparing Functions, Equations, Tables, Graphs

This graph represents which function?

• y = -2x

• y = 2x

• y = -2x + 1

• y = 2x - 1

Is this mapping a function or not a function? 

• Function

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

What is the equation for tree C?

• y = 3.5x + 10

• y = 3.5x - 10

• y = -3.5x + 10

• y = -3.5x -10

Which of the following represents a greater rate of change?

• The first equation

• The second equation

• Both have the same rate of change

• Cannot be determined from the given information

• Both have the same y-intercept

• Cannot determine from the given information

Which mode of transportation travels farther to get to school & by how much?

• bus, 2 miles more

• bike, 2 miles more

• bus, 6 miles more

• bike, 6 miles more

The cost of Nate’s service is described by y = 4x + 6. The table shows the cost of Beth’s service. Which service is cheaper for 8 movies in one month? (a)  

• Beth's service ($38 vs. $40) is cheaper

• Nate’s service ($42 vs. $44) is cheaper

• Nate’s service ($38 vs. $40) is cheaper

• Beth's service ($42 vs. $44) is cheaper

The cost of Nate’s service is described by y = 4x + 6. The table shows the cost of Beth’s service. Which service is cheaper for 8 movies in one month?

• Beth's service ($38 vs. $40) is cheaper

• Nate’s service ($42 vs. $44) is cheaper

• Nate’s service ($38 vs. $40) is cheaper

• Beth's service ($42 vs. $44) is cheaper