238 Chapter 3 Graphing Linear Equations in Two Variables Section 3.4 Practice Exercises Study Skills Exercise When taking a test, go through the test and do all the problems that you know first.Then go back and work on the problems that were more difficult. Give yourself a time limit for how much time you spend on each problem (maybe 3 to 5 min the first time through). Circle the importance of each statement. not somewhat very important important important a. Read through the entire test first. 1 2 3 b. If time allows, go back and check each problem. 1 2 3 c. Write out all steps instead of doing the work in your head. 1 2 3 Vocabulary and Key Terms 1. a. Consider a line with slope m and y-intercept (0, b).The slope-intercept form of an equation of the line is . b. An equation of a line written in the form Ax By C where A and B are not both zero is said to be in form. Review Exercises 2. For each equation given, determine if the line is horizontal, vertical, or slanted. a. 3x 6 b. y 3 6 c. x y 6 For Exercises 3–10, determine the x- and y-intercepts, if they exist. 3. 4. 5. 6. x 5y 10 3x y 12 3y 9 2 y 5 7. 8. 9. 10. Concept 1: Slope-Intercept Form of a Linear Equation For Exercises 11–30, identify the slope and y-intercept, if they exist. (See Examples 1–2.) 2 3 11. y 2x 3 12. x 5 13. 14. 15. 16. y y x 6 y x y 5x 17. 18. 19. y x 2x 5y 4 20. 21. 22. 3x 2y 9 3x y 5 7x 3y 6 23. 24. 25. x y 6 x y 1 x 6 8 26. 27. 28. 4 x 1 8y 2 1 y 9 29. 3y 2x 0 30. 5x 6y 5 3 y 3 4 x 1 y y x 2 1 2 4x 6y x 3 8 5x 20 x
miller_beginning_intermediate_algebra_4e_ch1_3
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