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Function ________________________ ________________________________ Domain _________________________ Range __________________________ Independent variable_______________ Dependent variable________________ Inputs _________________________ Outputs ________________________. Vocabulary.
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Function ________________________ ________________________________ Domain _________________________ Range __________________________ Independent variable_______________ Dependent variable________________ Inputs _________________________ Outputs ________________________ Vocabulary
Examples • What is the domain? Range? Domain ______________________ Range _______________________
p. 7 with a partner • domain: range: • domain: range: • domain: range:
Examples • Given the function y = ½x – 3 with a domain of 2,4,6,8 make a table and identify the range.
p. 8 with a partner 4. range: 5. range:
Writing equations from tables . . . • How do you get the output value with the given input value? • See if that works for each case.
Writing an equation (function rule) by looking at a table . . .
p. 8 with a partner 6. 7.
1.3 Graphing Functions • Graph the function by first making an input-output table and then plotting the ordered pairs on a graph. • Remember . . . x values are the ________, ________, ________ and y values are the _______, __________, ____________. (3 names for each)
Graph the function . . . y = ½x – 2 Domain: 0,2,4,6
p. 11 #2-5 with a partner 2. 3. 4. 5.
Writing an equation (rule) from a graph . . . • Make an input-output table first and then determine what you do to the input (x) to get the output (y).
Last example! Make a table for the graph and write a rule for the function. Identify the domain and range. Domain ____________________________ Range_____________________________ Equation __________________________
p. 12 with a partner 6. 7. 8. 9.