Word Problems (system of equations)

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What is a system of equations?

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A system of equations is a set of two or more equations with the same variables. The solution to the system is the set of values that satisfy all equations simultaneously.

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How do you represent a word problem as a system of equations?

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To represent a word problem as a system of equations, identify the variables, translate the relationships and conditions described in the problem into equations, and ensure the equations reflect the same variables.

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What does it mean to solve a system of equations?

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Solving a system of equations means finding the values of the variables that make all equations in the system true at the same time.

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What is the substitution method in solving systems of equations?

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The substitution method involves solving one equation for one variable and then substituting that expression into the other equation to find the values of the variables.

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What is the elimination method in solving systems of equations?

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The elimination method involves adding or subtracting equations to eliminate one variable, making it easier to solve for the remaining variable.

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What is the graphical method for solving systems of equations?

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The graphical method involves graphing each equation on the same coordinate plane and identifying the point(s) where the graphs intersect, which represent the solution(s) to the system.

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What is a consistent system of equations?

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A consistent system of equations has at least one solution, meaning the equations intersect at one or more points.

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What is an inconsistent system of equations?

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An inconsistent system of equations has no solutions, meaning the equations represent parallel lines that never intersect.

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What is a dependent system of equations?

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A dependent system of equations has infinitely many solutions, meaning the equations represent the same line.

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How do you identify variables in a word problem?

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To identify variables in a word problem, look for quantities that can change or vary, and assign a symbol (like x or y) to represent each distinct quantity.