Solve the following system of equations. Classify it as CONSISTENT (INDEPENDENT or DEPENDENT) or INCONSISTENT.
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
7. Systems of Equations & Matrices
Two Variable Systems of Linear Equations
Problem 1
Textbook Question
Solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
Verified step by step guidance1
Identify the system of equations you need to solve. Typically, this will be two or more equations involving the same variables.
Choose a method to solve the system: substitution, elimination, or graphing. For substitution, solve one equation for one variable and substitute into the other. For elimination, add or subtract equations to eliminate one variable.
Perform the chosen method step-by-step to reduce the system to a single equation with one variable. Solve this equation for that variable.
Substitute the found value back into one of the original equations to find the value of the other variable(s).
Analyze the results: if you get a true statement with no variables (like 0=0), the system has infinitely many solutions; if you get a false statement (like 0=5), the system has no solution; otherwise, write the solution as an ordered pair or set notation representing the solution set.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Systems of Linear Equations
A system of linear equations consists of two or more linear equations with the same variables. The goal is to find values for the variables that satisfy all equations simultaneously. Understanding how to represent and interpret these systems is fundamental to solving them.
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Methods for Solving Systems
Common methods to solve systems include substitution, elimination, and graphing. Each method provides a way to find the solution set by manipulating the equations or visualizing their graphs. Choosing an appropriate method depends on the system's complexity and form.
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Types of Solutions and Set Notation
Systems can have one solution, no solution, or infinitely many solutions. No solution means the lines are parallel and never intersect; infinitely many solutions mean the equations represent the same line. Solutions are expressed using set notation to clearly define all possible solutions.
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