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Mathematics, 09.12.2020 20:30 jordanrini
Algebra - Two Questions
1. A system of linear equations is shown below as well as the first steps that Raffi is using to solve this system of linear equations by substitution. Choose the statement that best describes how Raffi is progressing toward a solution.
7x+y=4
3xโ2y=3
Solution: Solve the first equation to obtain y=โ7x+4. Substitute this into the second equation to get 3xโ2โ
โ7x+4=3.
2. Solve the following system by the substitution method.
2xโy=โ4
โ5x+3y=14
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Answers: 2
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Algebra - Two Questions
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