Score:. 1. Directions: Tell whether the following statements are true or false. 1. The independent variable depends on the dependent variable. 2. The dependent variable changes only in response to the independent variable. 3. Salary is an independent variable because it controls the number of hours that one works. 4. The height of a plant is dependent on the number of years it grown. 5. In a given function, the domain is the set of acceptable inputs while the range is the set of acceptable outputs. 6. We can use any value for the domain. 7. In a set of ordered pairs, the abscissas are the domain and the ordinates are the range. 8. In a rational function, f(x) = 1 2x, the domain is the set of real numbers not equal to the number that would make the denominator zero. 9. In a rational function, f(x) = 1 2x, the range is the set of real numbers except zero. 10. In a radical function, f(x) = 2Vx + 1, the domain is the set of real numbers greater than or equal to 0. 11. The range of the function f(x) = 2VX + 1 is the set of real numbers less than or equal to 2. 12. The range of the function f(x) = 1 - 3x is the set of real numbers. 13. The range of the function f(x) = -2(x - 3)2 is the set of all real numbers greater than or equal to zero. 14. To find the domain of a function described by the graph, we look horizontally from left to right, look for breaks or gaps on the graph, where it begins and where it ends. 15. To find the domain of a function described by the graph, we look vertically up and down look for breaks or gaps on the graph, where it begins and where it ends.
