# the number line   139 videos

• #### 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
• #### Number of Diagonals in a Polygon

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

How to determine the number of diagonals in a polygon.

vertex diagonal non consecutive vertices polygon
• #### Properties of Real Numbers

##### Algebra 2Real Numbers

How to define the properties of real numbers.

associative commutative distributive identity inverse
• #### Finding the Equation of a Graphed Line

##### AlgebraLinear Equations and Their Graphs

How to write the equation of a graphed line.

point slope form slope intercept form slope y intercept
• #### Horizontal and Vertical Lines

##### Pre-AlgebraGraphing in Two Dimensions

Equations and slopes of horizontal and vertical lines

• #### Converting Complex Numbers From Rectangular Form to Trigonometric

##### PrecalculusPolar Coordinates and Complex Numbers

How to convert a complex number from rectangular form to trigonometric form.

complex numbers rectangular form trigonometric form modulus argument
• #### Tangent Lines and Optimization

##### AP Calculus ABAP Calculus Videos
Equations of tangent lines optimization problems
• #### Cyclic Quadrilaterals and Parallel Lines in Circles

##### GeometryCircles

How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.

inscribed angles cyclic quadrilaterals parallel lines alternate interior angles
• #### Graphing Lines using Intercepts

##### AlgebraLinear Equations and Their Graphs

How to graph a line using the x and y intercepts.

x intercept y intercept standard form
• #### Parallel and Perpendicular Lines

##### AlgebraLinear Equations and Their Graphs

How to determine whether lines are parallel, perpendicular, or neither.

parallel perpendicular point slope form intersect right angle
• #### Duplicating a Line Segment

##### GeometryConstructions

How to duplicate a line segment using a compass and straightedge.

congruent segments construction compass straightedge
• #### Line of Best Fit

##### Pre-AlgebraIntroductory Statistics

Overview of correlation, scatterplots, and line of best fit

• #### Converting Improper Fractions and Mixed Numbers

##### Pre-AlgebraFractions and MIxed Numbers

Vocabulary of improper fractions and mixed numbers

• #### Chemistry Mole

##### ChemistryChemical Reactions

The meaning and functionality of Avogadro's number in chemistry.

• #### How to Graph a Line using y=mx+b

##### AlgebraLinear Equations and Their Graphs

How to graph a line.

table of values y intercept slope slope intercept form point slope form x intercept
• #### Constructing Parallel Lines

##### GeometryConstructions

How to construct parallel lines using three different methods.

transversal duplicating angles corresponding alternate interior alternate exterior
• #### Finding the Slope of a Line from a Graph

##### AlgebraLinear Equations and Their Graphs

How to find the slope of a line if given a graph.

slope change ratio fraction slope triangle
• #### 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 Lines using a Table of Values

##### AlgebraLinear Equations and Their Graphs

How to graph a line by making a table of values.

table of values substitution
• #### Finding the Slope of a Line from a Graph

##### Algebra 2Graphs of Linear Equations

How to find the slope of a line if given a graph.

slope change ratio fraction slope triangle