True/False Quiz for Chapter 1

Linear And Quadratic Functions And Their Applications

Chapter 1 Summary

Chapter 2 True/False Quiz

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1. The graph of any equation in two variables is a straight line. True False

2. The graph of any linear equation in two variables is a straight line. True False

3. If f(x) = x² + 3x, then f(-1) = -4. True False

4. If f(x) = 2x² + 1, then f(3) = 37. True False

5. If f(x) = 2, then f(1) is not defined. True False

6. Every line has a slope. True False

7. Every non-vertical line has a slope. True False

8. Every line is the graph of a linear equation in two unknowns. True False

9. To find the equation of a line, all you need is a point and the slope. True False

10. You need to know the y-intercept to write down the equation of a line. True False

11. The graph of a quadratic function f(x) = px²+qx+r (with p nonzero) is always a parabola. True False

12. The vertex is the lowest point on a parabola. True False

13. Every parabola crosses both axes. True False

14. In a linear cost function, the slope gives the cost of the first item. True False

15. If displacement is a linear function of time, then the slope of the graph represents the velocity. True False

16. If the weekly sales q of an item priced at $p are given by q = -3p + 40, then the weekly sales decrease by 3 items for every $1 increase in price. True False

17. If the total weekly revenue for items priced at $p is given by the function R(p) = -p² + 100p, then the total weekly revenue will be $100 if we give the items away. True False

18. A real valued function of a real variable is a rule that assigns exactly one number to each specified input number in a specified domain. True False

19. Some functions assign two or more numbers to each specified input number. True False

20. Every equation in x has at least one solution that can be found with a graphing calculator. True False