8M: 4-3 (writing/eval func + ind/dep)

1a. Which coordinate is the input? 1b. Which coordinate is the output? *Use lower case letters for your answers. 2. What is f(-3) for f(x) = x + 6? -9 -3 9 3 3. What is the function rule for the following? x -2 0 2 y 7 3 5 y = x + 5 x = y + 5 x + y = 5 y = 2x + 5 4. What is the function rule? -2 0 x 2 f(x) -1 0 1 f(x) = x + 1 f(x) = 2x f(x) = x/2 x = ½ 0 x 3 9 6 y 0 6 3 9 5. Which equation represents the t-chart displayed to the left? y = 3x y = x y = -3x y = -x 2 x 3 5 4 4 y 1 3 2 6. Which equation represents the t-chart displayed to the left? y = -x + 1 y = -x - 1 y = x - 1 y = x + 1 y = -x + 8 y = -x - 8 x y 0 8 y = x + 8 y = x - 8 -1 7 -2 6 7. Which equation represents the t-chart displayed above? -3 5 8. What is f(-5) for f(x) = -2x + 3? -7 -4 13 -13 9. What is g(12) for g(x) = -3x - 5? -20 -41 -31 31 10. Which is the independent variable in the situation below? The longer you scrub the kitchen floor, the cleaner it will be.the cleanliness of the floor the time you scrub the floor 11. Which is the dependent variable in the situation below? amount of gas Since the gas tank has little gas in it, the boat ride will be short.length of boat ride 12. Which is the dependent variable in the situation below? amount of time the squirrel is in the house The longer the squirrel is in Ms. Maynard'shouse, the more walnuts will be in herceiling.the number of walnuts in the ceiling |

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