System of Linear Equations In Exercises 25-38, solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination.
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- Coefficient Design In Exercises 79-84, determine the values of k such that the system of linear equations has the indicated number of solutions. Infinitely many solutions kx+y=163x4y=64arrow_forwardWriting Consider the system of linear equations in x and y. a1x+b1y=c1a2x+b2y=c2a3x+b3y=c3 Describe the graphs of these three equations in the xy-plane when the system has a exactly one solution, b infinitely many solutions, and c no solution.arrow_forwardBack-Substitution. In Exercises 25-30, use back-substitution to solve the system. xy=53y+z=114z=8arrow_forward
- Coefficient Design In Exercises 79-84, determine the values of k such that the system of linear equations has the indicated number of solutions. No solution x+ky=2kx+y=4arrow_forwardSystem of Linear Equations In Exercises 25-38, solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination. x+2y=0x+y=63x2y=8arrow_forwardDiscovery In Exercises 91 and 92, sketch the lines represented by the system of equations. Then use Gaussian elimination to solve the system. At each step of the elimination process, sketch the corresponding lines. What do you observe about the lines? 2x3y=74x+6y=14arrow_forward
- Back-Substitution. In Exercises 25-30, use back-substitution to solve the system. x+yz=02y+z=312z=0arrow_forwardTemperature In Exercises 29 and 30, the figure shows the boundary temperatures in degree Celsius of an insulted thin metal plate. The steady-state temperature at an interior junction is approximately equal to the mean of the temperatures at the four surrounding junctions. Use a system of linear equations to approximate the interior temperatures T1,T2,T3, and T4.arrow_forwardSystem of Linear Equations. In Exercises 57-62, use a software program or a graphing utility to solve the system of linear equations. 123.5x+61.3y32.4z=262.7454.7x45.6y+98.2z=197.442.4x89.3y+12.9z=33.66arrow_forward
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