Algebra

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Math Review of Difference of Squares
Math Review of Difference of Squares 150 150 Deborah

Overview The difference of squares is a common binomial pattern that can be factored as (x+b)(x-b). It can be used in situations involving estimation by making both elements a difference…

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Math Review of Solving Systems with Substitution
Math Review of Solving Systems with Substitution 150 150 Deborah

Overview One way to solve systems of equations with more than one variable is to substitute values of one variable for another.  Suppose that a variable y is equal to…

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Math Review of Multiplying Fractions and Rates
Math Review of Multiplying Fractions and Rates 150 150 Deborah

Overview Multiplication of fractions and rates with variables is similar to multiplying regular fractions and rates. It is important to cancel out common factors and units. The General Pattern The…

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Math Review of the Tangent of an Angle
Math Review of the Tangent of an Angle 150 150 Deborah

Overview The tangent of an angle is a ratio of the length of a leg opposite an acute angle to the length of a leg adjacent to the acute angle…

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Math Review of Slopes and Lines
Math Review of Slopes and Lines 150 150 Deborah

Overview Values for x and y can be graphed on the Cartesian coordinate plane.  If x and y are terms in a linear equation, they can be graphed in a line.…

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Math Review of Applications of Parabolas
Math Review of Applications of Parabolas 150 150 Deborah

Overview A parabola is a graph of a quadratic equation. It is a U-shaped curve with an axis of symmetry. Many different objects in the real world follow the shape…

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Math Review of Relative Frequency
Math Review of Relative Frequency 150 150 Deborah

Overview: Relative frequencies refer to estimates of probabilities taken from actual data.  Suppose that a survey of 1000 voters is taken and 213 of them state that they are going…

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Math Review of Probability without Counting
Math Review of Probability without Counting 150 150 Deborah

Overview Usually, probability is calculated in terms of relative numerical frequencies. However, it can also be calculated in terms of ratios of area. Probability of Area Suppose that a target…

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Math Review of Systems of Inequalities
Math Review of Systems of Inequalities 150 150 Deborah

Overview Systems of inequalities can be solved in much the same way as linear equations. If there is a solution in which the systems intersect, it will be in terms…

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Math Review of Absolute Value Functions
Math Review of Absolute Value Functions 150 150 Deborah

Overview Absolute value functions are functions in which f(x) = │x│. They are important in a number of settings, including the study of error and probability functions. Definition of Absolute…

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