4.22 domain and range from a graph nov. 10 and 11
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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? _______