# solving linear equations   216 videos

• #### Writing an Equation to Describe a Table

##### AlgebraGraphs and Functions

How to write a function to describe a table of values.

function slope y intercept pattern

• #### 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

• #### Number of Handshakes at a Party

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to determine the number of handshakes possible in a group of a certain number of people.

mathematical modeling non linear functions diagonals
• #### Computing Difference Quotients

##### PrecalculusEquations of Lines, Parabolas and Circles

How to compute and simplify the difference quotient of a linear function.

functions function notation slope secant line difference quotient
• #### Computing Difference Quotients

##### PrecalculusIntroduction to Functions

How to compute and simplify the difference quotient of a linear function.

functions function notation slope secant line difference quotient

• #### 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
• #### Rate Word Problems

##### AlgebraWord Problems Using Systems of Equations

How to solve word problems involving rates of travel, possibly including wind or water current.

rate ratio d=rt word problem system of equations
• #### 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
• #### Vertical and Horizontal Shifts of Quadratic Graphs

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

• #### 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
• #### Find an Equation for the Sine or Cosine Wave

##### TrigonometryTrigonometric Functions

How to identify the graph of a stretched cosine curve.

sine cosine period amplitude intercepts turning points