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Objective – to be able to recognize a function

12.2 Functions and Graphs. Objective – to be able to recognize a function. Warm-Up:. Find the domain of the relation {(1,3),(2,4),(5,6)}. Determine if the relation is a function. 1) Graphing and Recognizing Functions. Graph the following functions by making a table and plotting the points.

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Objective – to be able to recognize a function

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  1. 12.2 Functions and Graphs Objective – to be able to recognize a function

  2. Warm-Up: Find the domain of the relation {(1,3),(2,4),(5,6)} Determine if the relation is a function

  3. 1) Graphing and Recognizing Functions Graph the following functions by making a table and plotting the points. 1)

  4. 1) Graphing and Recognizing Functions 2)

  5. Which of the two graphs above is not a function? Why? Vertical Line Test: a test to determine if the graph of a relation is a function. If the line crosses the graph more than once at the same time, then it is not a function.

  6. Determine which of the following graphs represents a function?

  7. 2) Finding the Domain Domain: the inputs (all the x’s) that make the functions real 3) 4) 5) 0 cannot be in the denominator. So, The radicand cannot be negative Linear function, Every number for x makes this function real. So, all real numbers All real numbers except 2. All real numbers greater than or equal to -6.

  8. Find the domain of each function e. f. G.

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