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Unformatted text preview: Look at Example 6 on page 146. Find the domain and range of each graph. Write domain and range in interval notation. Function Notation Letters such as f and g are often used to name functions. When we write y = f(x), This means that y is a function of x (or y depends on x) y is called the dependent variable; x is called the independent variable The notation f(x) is read “f of x” (not f times x) Example: y = 4x + 3 can be written as f(x) = 4x + 3 The notation f(1) means to replace x with 1 and find the resulting value. f(1) = 4(1) + 3 f(1) = 7 This corresponds to the ordered pair (1,7) Find f(2) Find f(0) Find f(1) F(2)=4(2)+3 f(0)=4(0)+3 f(1)=4(1)+3 F(2)=11 f(0)=3 f(1)=1 (2,11) (0,3) (1,1) Example: If g(x)=4x+5 and f(x)=3x²x+2 Find a) g(0) b) g(5) c) f(2) d) f(1) Homework Ch. 3, asmt #3: p. 151 #2381 odd (Bonus: 95,96)...
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 Spring '08
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