# Search for tag: "math emporium"

#### Power rules with positive exponents: Multivariate quotients

A quick example of distributing an external exponents to all factors in a rational expression

From  Tom Grant 2 plays 0

#### Power rules with positive exponents: Multivariate products

An example of how we distribute an exponent outside of parentheses to all factors within.

From  Tom Grant 2 plays 0

#### Introduction to the power of a product rule of exponents

A short demo of this rule

From  Tom Grant 2 plays 0

#### Introduction to the power of a power rule of exponents

A short example of how the power rule works.

From  Tom Grant 2 plays 0

#### Product rule with positive exponents: Multivariate

A straightforward examplel of a simplification using the product rule for exponents.

From  Tom Grant 2 plays 0

#### Introduction to the product rule of exponents

The product rule is stated in general and then applied to an example.

From  Tom Grant 8 plays 0

#### Understanding the product rule of exponents

A quick intro to how and why the product rule for exponents works.

From  Tom Grant 7 plays 0

#### Solving a word problem involving a sum and another basic relationship using a system of lineaer equations

This demo discusses how to set up two equations to solve the situation described, and then choose the best method to use to solve for each of the variables.

From  Tom Grant 6 plays 0

#### Solving a system of linear equations using elimination with addition

This talks about why we need two equations to solve for two unknown values, and then demonstrates how to add two equations together to eliminate one varaible and solve for the other one, then find…

From  Tom Grant 9 plays 0

#### Identifying parallel and perpendicular lines from equations

This shows how to transform all given equation that are not in slope-intercept form and then pick out the slopes of all three given lines and compare them to see if they are parallel, perpendicular…

From  Tom Grant 9 plays 0

#### Writing an equation in slope-intercept form given the slope and a point

This shows the method of using the point-slope form to write the equation, then solving that form for y to get y = mx + b.

From  Tom Grant 15 plays 0

#### Writing an equation and graphing a line given its slope and y-intercept

The informaton given here can be entered directly into the y = mx + b or slope-intercept form. Then the y-intercept is used as a starting point where you apply rise over run to the given slope to…

From  Tom Grant 5 plays 0

#### Graph a line given by first finding its x- and y-intercepts

This video describes why the method for finding the intercepts works, then demonstrates finding the intercepts for an example equation and graphing its line.

From  Tom Grant 16 plays 0

#### Graph a line given its equation in slope-intercept form: Fractional slope

Another demo on how to use the y-intercept to start a graph of a linear equation and then use the slope to find other points on the graph. It finishes with showing the line representing all of the…

From  Tom Grant 7 plays 0

#### Identifying solutions to a linear equation in two variables

A demo that shows how to substitute possible x-y ordered pairs into an equation to find out whether they create a true statement, determining which are solutions and which are not.

From  Tom Grant 7 plays 0

#### Graphing a line given its equation in slope-intercept form: Integer slope

This explains how to use the slope and y-intercept to determine points on the line graph of a linear equation in two variables and then draws the straight line graph.

From  Tom Grant 9 plays 0