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Section 3.1 Solving Systems of Linear Equations by the Graphing Method 245 30. 31. 32. 3x 2y 4 2x y 4 x 4y 4 4y 6x 8 4x 2 2y 2x 8y 16 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 For Exercises 33–36, identify each statement as true or false. 33. A consistent system is a system that always has a unique solution. 34. Dependent equations form a system that has no solution. 35. If two lines coincide, the equations are dependent. 36. If two lines are parallel, the equations are independent. Expanding Your Skills 37. Write a system of equations with solution set 514, 526. 38. Write a system of equations with solution set 512, 626. 39. Find C and D such that the solution set to the system is 511, 326. Cx 2y 11 3x Dy 9 40. Find M and N such that the solution set to the system is 512, 426. 3x My 22 Nx 4y 6 Graphing Calculator Exercises For Exercises 41–44, use a graphing calculator to graph each linear equation on the same viewing window. Use a Trace or Intersect feature to find the point(s) of intersection. 41. y 5.62x 15.46 42. y 2.3x 5.48 y 1.96x 11.07 y 4.62x 26.352 43. 44. 2.4x 4.8y 9.36 36x 90y 36 1.8x 5.4y 12.456 15.5x 5y 80.75


miller_intermediate_algebra_4e_ch1_3
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