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2.3 (M2) Warm Up

2.3 (M2) Warm Up. Do # 35-38 on pg. 13. 2.3 (M2) Represent Relations & Functions. Vocabulary. A relation is a mapping, or pairing, of input values with output values.

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2.3 (M2) Warm Up

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  1. 2.3 (M2) Warm Up Do # 35-38 on pg. 13

  2. 2.3 (M2) Represent Relations & Functions

  3. Vocabulary . . . • A relation is a mapping, or pairing, of input values with output values. • A function is a relation for which each input value has exactly one output value. By the vertical line test a relation is a function if and only if no vertical line intersects the graph of the relation at more than one point.

  4. An ordered pair (x,y) is a solution of an equation in two variables if substituting x and y into the equation produces a true statement. • A function is one-to-one if no two values in the domain have the same value in the range.

  5. Example 1: Represent relations and identify functions & Example 2: Graph an equation in two variables • Let’s look at the examples (1 & 2) on pg. 33 & 34 . . .

  6. Example 3: Classify and evaluate functions • Linear functions are in the form y = mx + b • Evaluate a function means to substitute in an x value and simplify • Look at example 3 on pg. 34

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