Functions Review (I.V./R.O.C.)

What is the equation for the Taxi Cab situation?

• y = .3x
• y = x + .3
• y = .3x + 1
• y = .3x - 1

Determine the equation of the line based on the graph.

• y = -2x + 1
• y = -x + 2
• y = 2x + 1
• y = -2x + 2

Determine the rate of change. What is the cost for a dozen pounds?

• $12
• $20
• $24
• $30

Based on the table, determine the rate of change for the situation.

• There are 10 candles burning for 10 hours.

• The candle starts at 10 inches tall and after 10 hours it is burned out.

• For every hour that goes by, the candle gains one inch in height.

• The candle burns an inch every hour.

The graph represents the different rates Sam and Kim hiked. Use the legend to determine who hiked at a faster pace.

• Kim hiked at a faster rate.
• Sam hiked at a faster rate.
• They hiked at the same rate.
• Their rates cannot be determined from the graph.

Brandon works in a shoe store. His daily earnings, y, are represented by the equation y = 20x + 75 based on selling x pairs of shoes. What is represented by the slope in this equation?

• The total pairs of shoes Brandon sells each day

• The total amount of money Brandon earns each day

• The amount of money Brandon earns for each pair of shoes he sells

• The amount of money Brandon earns each day, even if he sells no shoes

Anthony runs a bicycle courier company that charges $3 for delivery plus $0.50 per mile. Which equation matches this relationship?

•  m = 3c + .5
• c = 3m + .5
• c = .5m + 3
• m = .5c + 3

A bamboo reed is planted when it is 12 centimeters tall. It grows 2.2 centimeters per week. Which equation shows h, height as it relates to the number of weeks, w.

• w = 12h + 2.2
• h = 12w + 2.2
• w = 2.2h + 12
• h = 2.2w + 12

• membership fee of $25 plus $100 each month.
• membership fee of $100 plus $25 per month
• membership fee of $100 plus $75 each month
• $25 every month

What is the y - intercept or starting point for this table?

• 0
• 2
• 3
• 4