Section 3.1 Solving Systems of Linear Equations by the Graphing Method 243 1 3 12. y 2x 3 13. x 2 14. 4x 2y 0 x 3y 6 4x 6y 6 5 4 y 1 21 5 4 1 5 4 y 1 543 21 1 2 3 4 5 1 Concept 2: Solving Systems of Linear Equations by Graphing For Exercises 15–32, solve the system by graphing. For systems that do not have one unique solution, also state the number of solutions and whether the system is inconsistent or the equations are dependent. (See Examples 2–5.) 15. 2x y 3 16. 4x 3y 12 17. f1 x2 2x 3 g1x 2 x y 3 3x 4y 16 5x 4 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 4 5 x 3 2 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 4 5 x 3 2 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 4 5 x 3 2 k1x2 x 2 18. 19. 20. 1 2 5 2 f 1 x2 g1x2 x 2 2 3 x 2 g1x2 x 2 f 1x2 1 3 h1 x2 x 5 2x 5 y 2 3 y x 1 543 1 2 3 4 5 1 3 4 5 x 3 2 2 543 1 2 3 4 5 1 3 4 5 2 y x 3 2 2 1 3 4 5 x 3 2 2 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 5 x 3 2 4 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 4 5 x 3 2 5 4 y 1 54 3 1 2 3 4 5 21 1 2 3 4 5 x 3 2
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