Writing Systems 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 is the set of values that satisfy all equations in the system.

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What does it mean to solve a system of equations graphically?

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Solving a system of equations graphically involves plotting the equations on a graph and identifying the point(s) where the lines intersect, which represent the solution(s).

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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 both 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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How can you represent a word problem as a system of equations?

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Identify the variables, translate the relationships and conditions into equations, and ensure the equations represent the same situation.

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What is the significance of the coefficients in a system of equations?

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Coefficients represent the relationship between the variables in the equations. They indicate how much one variable affects another.

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What does it mean if a system of equations has no solution?

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A system of equations has no solution if the lines represented by the equations are parallel, meaning they never intersect.

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What does it mean if a system of equations has infinitely many solutions?

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A system of equations has infinitely many solutions if the equations represent the same line, meaning every point on the line is a solution.

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How do you check the solution of a system of equations?

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To check the solution, substitute the values of the variables back into the original equations to see if they satisfy all equations.

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What is a linear equation?

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A linear equation is an equation that forms a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.