230 Chapter 3 Graphing Linear Equations in Two Variables 11. y 0.2x 0.04 Window: 0.1 x 0.3 0.1 y 0.1 Xscl 0.01 (sets the x-axis tick marks to increments of 0.01) Yscl 0.01 (sets the y-axis tick marks to increments of 0.01) 12. y 0.3x – 0.5 Window: 1 x 3 1 y 1 Xscl 0.1 (sets the x-axis tick marks to increments of 0.1) Yscl 0.1 (sets the y-axis tick marks to increments of 0.1) 1 2 7 2 3. y x 4. 5. 6. 7. 8. y 3 4 x 5 3 4x 7y 21 2x 3y 12 3x 4y 6 5x 4y 10 For Exercises 9–12, graph the equations on the given viewing window. 9. y 3x 15 Window: 10. 10 x 10 5 y 20 y 2x 25 Window: 30 x 30 30 y 30 Xscl 3 (sets the x-axis tick marks to increments of 3) Yscl 3 (sets the y-axis tick marks to increments of 3) Section 3.2 Practice Exercises Study Skills Exercise Check your progress by answering these questions. Yes No Did you have sufficient time to study for the test on Chapter 2? If not, what For additional exercises, see Classroom Activities 3.2A–3.2C in the Student’s Resource Manual at www.mhhe.com/moh. could you have done to create more time for studying? Yes No Did you work all of the assigned homework problems in Chapter 2? Yes No If you encountered difficulty, did you see your instructor or tutor for help? Yes No Have you taken advantage of the textbook supplements such as the Student Solutions Manual? Vocabulary and Key Concepts 1. a. A linear equation in two variables is an equation that can be written in the form , where A and B are not both zero. b. A point where a graph intersects the x-axis is called a(n) . c. A point where a graph intersects the y-axis is called a(n) . d. A line can be represented by an equation of the form where k is a constant. x k, e. A line can be represented by an equation of the form where k is a constant. y k, Writing Translating Expression Geometry Scientific Calculator Video Ax By C x-intercept y-intercept vertical horizontal
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