Constant Rate of Change from Graphs

Between 4 and 8 seconds the helicopter's distance is .....................

• Increasing

• Decreasing

• Staying the same

Between which seconds is the line INCREASING?

• Between 7 and 12 seconds

• Between 0 and 1 seconds

• Between 1 and 5 seconds

• Between 12 and 13.5 seconds

The graph shows the speed of Mr. Sam driving to work. Which section shows Mr. Sam stopped in traffic?

• a.

• b.

• g.

• d.

• f.

What is happening in the graph between 30 and 40 minutes?

• Sarah is accelerating

• Sarah is not moving

• Sarah is slowing down

• Sarah is travelling at a constant speed

Using the graph above, determine the constant of proportionality.

• k = 0

• k = 1

• k = 3

• k = 6

Identify the constant of proportionality. Write your answer as y=kx

• y=14x

• y=7x

• y=2x

• y=6x

Which of the following rates of change represents the graph shown?

• 2 boys for every 1 girl

• 0.5 boys for every 1 girl

• 6 boys for every 1 girl

• 3 boys for every 1 girl

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked
  is the unit rate

• $500 is earned for every 8 hours worked

• $300 is earned after working 4 hours

Identify the constant of proportionality. Write your answer as y=kx

• y=7x

• y=72x

• y=9x

• y=8x

What is Miguel's rate of savings?

• $15 per day

• $15 per week

• $15 per month

• $15 per year