fpc_unit_2.1_hw_function_intro_key_v2.pdf

2.1 Practice – Function Intro Name: __________________________ Pre‐Calculus For 1‐4, identify if the relationship represents a function. If it does not, clearly explain why not. 1) Independent Dependent 2) Domain Range 3)...

2.1 Practice – Function Intro Name: __________________________ Pre‐Calculus For 1‐4, identify if the relationship represents a function. If it does not, clearly explain why not. 1) Independent Dependent 2) Domain Range 3) The ordered pairs: 4) 5 0, 1 4, ‐2 5 3 ‐1 17, 0 , 1, 4 , 0 5, 4 2, and 0 5 2 ‐5 2,5 , 3,4 , and 1,6. 1 4. 1 5 5 ‐5 2 5 4 ‐6 6 5 3 ‐3 For 5‐8, identify the independent (input) variable and the dependent (output) variable. 5) While Trick‐or‐Treating, the amount of candy collected 6) The amount of candy eaten determines the number depends on the number of doors knocked. of cavities the following year. 7) The ability to draw quality art is a function of the hours 8) The month of the year helps determine the average spent drawing. high temperature. For 9‐11, write a sentence explaining the meaning of the specific numbers given for each scenario. 9) The input of a function is time 10) The input of a function is 11) The input of a function is the number of day since midnight. The height (in centimeters). The of lame jokes Mr. Kelly tells in a day. output is the number of cars in output is weight (in pounds). The output is the irritability level of his the parking lot. What does What does 183 212 students (measured in Kellygrams). 9 115 mean? mean? What does 8 78 mean? For 12‐14, use a graphing calculator to complete the table. Use the method indicated. 12) 0.7 4.9 501 13) 14) 5034 35.2 8005 Use Table Ask Use Function Notation Use Trace For 15‐18, use the graph given for each problem to determine the values. If the value is between two integers, approximate to one decimal place. 15) 16) a. 2 y a. 3 y b. 2 b. 1.5 x x c. If 4, c. If 3, then then d. If 0, d. If 0, then then the possible the possible value(s) of are: value(s) of are: 17) 18) a. 0 y a. 2 y b. 1 b. 3 x c. If 4, then c. If 1, x then d. If 0, d. If 0, then then the possible the possible value(s) of are: value(s) of are: For 19‐23, state whether or not each graph represents a function. 19) 20) 21) 22) y 23) x 24) Find the output for 3 2 a. ∆ b. 3 c.