Interval and Set Notation for Linear Functions

Learning Targets
I can interpret the graph of a real life linear function.
I can use interval notation to describe the domain and range of a graph of a linear function.

​Success Criteria:

• I can identify the intervals where a function is increasing, decreasing or constant and write the intervals in interval notation.

• I can interpret each part of the graph in terms of the real­ life phenomena.

• I can identify the domain and range of the graph that models real life phenomena.

​Review from Friday

Multiple Choice

What does this graph represent?

• Constant speed

• Acceleration

• Not moving

Multiple Choice

What is happening at E?

• The object is not moving

• Decelerating

• Slower steady speed; moving away from the starting position

• Steady speed; returning to start position

Multiple Choice

1. What do the intervals of increase mean in the context of the graph?

• Jimmy's distance from home increased.

• Jimmy's distance from home decreased.

• Jimmy arrived at his friend's house.

• Jimmy arrived at school.

Multiple Choice

Which type of notation is expressed here: (4, 4.7)

• set notation

• interval notation

Multiple Choice

What is the range?

• (0, 40)

• (70,120)

• (0,80)

• (0,120)

Fill in the Blanks

1. What intervals of the graph are increasing? (Please answer using interval notation).

Multiple Choice

What does the range mean in the context of the graph?

• It took Jimmy 40 minutes to walk to the bus stop.

• It took Jimmy 80 minutes to walk to the bus stop.

• It took Jimmy 70 minutes to walk to the bus stop.

• It took Jimmy 50 minutes to walk to the bus stop.