4.22 Domain and Range from a

GraphNov. 10 and 11

Bell Ringer

• In your own words, describe the difference between Continuous and Discrete functions.

Review

• Domain:• Refers to the x-values that are represented in a problem.

• Read from left to right.

• Range:• Refers to the y-values that are represented in a graph.

• Read from the bottom to the top.

Review

• Discrete:

• When you have to lift up your pencil to trace the graph.

• We list all our x-values in brackets { } for our domain and all our y-values in brackets { } for our range.

Ex.

Domain:_________

Range:__________

Function?________

Review

• Continuous:• When you can trace the graph without lifting your pencil.

• We use interval notation to write the domain and range.

Ex 1: Continuous with two end points.

Domain:_________

Range: __________

Function?________

Review

Ex 2: Continuous graph with only one end point and continues forever in the other direction.

Domain: _________

Range: __________

Function? ________

Review

Ex 3: Continuous with no endpoints. Two arrows in both directions.

Domain: _________

Range: __________

Function? _______

Match Activity!

• Pull out a half sheet of paper. Put your name and date on the top.

• Label it Domain and Range Activity and number your paper 1-24.

• Working with your partner, you are going to match the graph to the given domain and range.