Functions Review

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

• slope

• y-intercept

• linear

• point-slope

What is the slope of this graph?

• 3/2

• -2

• 2/3

• -2/3

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

• How many minutes she was on the phone 
• What Tara pays per minute
• Tara's base fee for her phone service
• How much Tara owes at the end of each month

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

What is the initial value (y-int)?

• (0,7)

• (0, 0)

• (0,1)

• (0, 2)

What is the rate of change (slope) to rent a raft from Ryan's Rafts?

• $15 per hour

• $2.25 per hour

• $17.25 per hour

• $1 per hour

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Find the initial value (y-int)

• 1

• 9

• 11

• 0

Determine the y-intercept from the table. 

• -13

• 13

• 10

• 16