# graphing inequalities with two variables   206 videos

• #### Graphs of the Sine and Cosine Functions

##### PrecalculusTrigonometric Functions

How to define periodic functions.

periodic functions period amplitude
• #### Solving Formulas

##### GeometryArea

How to strategize about solving formulas for variables; how to solve the area of a rectangle formula for base and height; how to solve the area of a triangle formula for base and for height.

formulas isolating a variable rectangle area triangle area trapezoid area regular polygon area

• #### Graphing Rational Functions, n=m

##### PrecalculusPolynomial and Rational Functions

How to recognize when a rational function has a horizontal asymptote, and how to find its equation.

rational functions polynomials degree horizontal asymptote
• #### Graphing Rational Functions, n>m

##### PrecalculusPolynomial and Rational Functions

How to find the oblique asymptote of a rational function, if it has one.

rational functions polynomials degree horizontal asymptote
• #### Solving Single-step Equations

##### AlgebraSolving Equations

How to solve single step equations with one variable.

expressions equations solutions2
• #### Solving Linear Equations

##### PrecalculusLinear Equations and Inequalities

How to solve a linear equation in one variable.

solving linear equations
• #### Formulas

##### Pre-AlgebraSolving Equations and Inequalities

The importance of solving literal equations for a given variable

• #### Distributing

##### Pre-AlgebraPolynomials

Distributing a constant, variable, or negative over a polynomial

• #### Solving Linear Equations

##### Algebra 2Linear Equations

How to solve a linear equation in one variable.

solving linear equations
• #### The Method of Substitution

##### CalculusAntiderivatives and Differential Equations

How to evaluate an indefinite integral using the method of substitution.

antidifferentiation method of substitution change of variables derivatives differential
• #### Simple Substitutions

##### CalculusAntiderivatives and Differential Equations

How to use the method of substitution to avoid common integration mistakes.

antidifferentiation method of substitution change of variables derivatives differential
• #### Families of Polar Curves: Circles, Cardiods, and Limacon

##### PrecalculusPolar Coordinates and Complex Numbers

How to graph the special cases of the family r = a + b cos (theta) when a or b = 0.

polar graph polar equation polar curve circles center radius completing the square
• #### Transformations of a Hyperbola

##### Algebra 2Conic Sections

How to transform the graph of a hyperbola.

transformation hyperbola center
• #### Transformations of a Hyperbola

##### PrecalculusConic Sections

How to transform the graph of a hyperbola.

transformation hyperbola center
• #### Calculating Coordinates in the Unit Circle

##### GeometryPythagorean Theorem

How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle.

graphing a rational expression 1/x asymptotes
• #### Calculating Coordinates in the Unit Circle

##### TrigonometryPythagorean Theorem

How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle.

graphing a rational expression 1/x asymptotes
• #### Finding the Domain of a Function

##### PrecalculusIntroduction to Functions

How to find the domain of a function when it has rational or radical expressions.

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• #### Deriving the Quadratic Formula

##### Algebra 2Quadratic Equations and Inequalities

How to derive the quadratic formula by completing the square.

functions domain parent functions inequalities interval notation
• #### Properties of Similar Polygons

##### GeometrySimilarity

How to identify if two figures are similar.

similar figures corresponding angles congruence corresponding sides proportional