Equations Review

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What is an inequality?

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An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other. Examples include: x > 5, y ≤ 3.

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What does it mean to solve a system of equations using substitution?

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It means to solve one equation for one variable and then substitute that expression into the other equation to find the values of both variables.

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Solve the system of equations using substitution: y = 3 - x and 3y + x = 5.

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The solution is (2, 1).

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What is the definition of absolute value?

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The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |5| = 5 and |-5| = 5.

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What is the solution to the inequality |b - 8| + 10 > 22?

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What is a linear equation?

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What is the slope-intercept form of a linear equation?

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