Intro to Algebra 2

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What is Algebra?

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Algebra is a branch of mathematics that uses symbols and letters to represent numbers and quantities in formulas and equations.

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What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.

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What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing one or more variables.

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What does it mean to solve an equation?

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To solve an equation means to find the value(s) of the variable(s) that make the equation true.

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What is a linear equation?

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A linear equation is an equation of the first degree, meaning it has no exponents greater than one, and it can be written in the form y = mx + b.

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What is the slope of a line?

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The slope of a line is a measure of its steepness, calculated as the rise over run (change in y over change in x).

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What is the y-intercept?

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The y-intercept is the point where a line crosses the y-axis, represented by the value of y when x is 0.

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What is factoring in algebra?

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Factoring is the process of breaking down an expression into simpler components, or factors, that when multiplied together give the original expression.

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What is a quadratic equation?

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A quadratic equation is a second-degree polynomial equation in the form ax² + bx + c = 0, where a, b, and c are constants.

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What is the quadratic formula?

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The quadratic formula is used to find the solutions of a quadratic equation and is given by x = (-b ± √(b² - 4ac)) / (2a).