# logarithmic equations   192 videos

• #### Intercepts of Linear Equations

##### AlgebraLinear Equations and Their Graphs

How to work with x an y intercepts graphically or algebraically.

x intercept y intercept y=mx+b

• #### The Discriminant of a Quadratic Equation

##### Algebra 2Quadratic Equations and Inequalities

How to use the discriminant to know the number and type of solutions to a quadratic.

discriminant type of solution number of solutions type of roots number of roots

• #### Families of Polar Curves: Conic Sections

##### PrecalculusPolar Coordinates and Complex Numbers

How to describe the polar equations of conic sections.

polar graph polar equation polar curve conic sections focus origin pole parabola symmetric about the x axis parabola vertex
• #### Parametrizing a Circle

##### PrecalculusVectors and Parametric Equations

How to write the parametric equations of a circle centered at (0,0) with radius r, oriented counter-clockwise.

the unit circle cosine sine parametrization parametric equations circle counter clockwise
• #### Cramer's Rule

##### PrecalculusSystems of Linear Equations and Matrices

How to solve a system of two linear equations with two unknowns using Cramer's rule.

systems of linear equations Cramer's rule determinant coefficient matrix
• #### Vertical and Horizontal Shifts of Quadratic Graphs

How to graph parabolas with horizontal and vertical shifts without making a table of values.

• #### Coin Word Problems

##### AlgebraWord Problems Using Systems of Equations

How to solve word problems about values and number of coins.

coins system of equations substitution
• #### Age Word Problems

##### AlgebraWord Problems Using Systems of Equations

How to solve word problems about the ages of two people.

age system of equations substitution
• #### Symmetry of Polar Graphs

##### PrecalculusPolar Coordinates and Complex Numbers

How to determine if the graph of a polar equation is symmetric about the x-axis.

polar graph polar equation symmetry reflection x axis symmetric about the x axis
• #### Graphing Radical Equations using Shifts

How to graph radical functions without making a table of values.

shift dilation
• #### Finding the Slope of a Line from an Equation

##### AlgebraLinear Equations and Their Graphs

How to use the slope-intercept form of a line.

slope slope intercept form y intercept
• #### Graphing Equations by Making a Table of Values

##### Pre-AlgebraGraphing in Two Dimensions

Graphing a line by making a table of values

• #### Finding the Slope of a Line from an Equation

##### Algebra 2Graphs of Linear Equations

How to use the slope-intercept form of a line.

slope slope intercept form y intercept
• #### Applied Linear Equations: Mixture Problem

##### Algebra 2Linear Equations

How to solve a mixture problem when the size difference between the two containers is known.

word problem mixture
• #### Applied Linear Equations: Investment Problem

##### Algebra 2Linear Equations

How to solve an interest problem when given the total amount deposited.

word problem investment interest
• #### Applied Linear Equations: Tax Problem

##### Algebra 2Linear Equations

How to solve a word problem about finding the tax on a purchase.

word problem tax
• #### Applied Linear Equations: Distance Problem

##### Algebra 2Linear Equations

How to find the speed of transit when the time of two different legs is known.

distance rate time word problem