Search for tag: "solutions"

Solving an equation written in factored form

Starts with cautiioning against multiplying the factors back together and describes the zero product property to justify this warning. Then shows how to continue from the factored form to separate…

From  Tom Grant 15 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 8 plays 0  

Solving a compound linear inequality: Interval notation

This describes how to solve each side of a compound inequality, then using the graphs of each part determine the interval notation for the entire compound statement.

From  Tom Grant 19 plays 0  

Discriminant of a quadratic equation

Gives the three possible answers that result from calculating a discriminant, then demonstratew with two different quadratic equations.

From  Tom Grant 12 plays 0  

Identifying solutions to a linear inequallity in two variables

Just an exercise in testing whether an ordered pair makes an inequality statement true when plugged in for the variables.

From  Tom Grant 11 plays 0  

Classifying systems of linear equations from graphs

Looks at the three types of graphs that can occur with a system of two linear equaltions in two variables.

From  Tom Grant 17 plays 0  

Identifying solutions to a system of linear equations

This demonstrates testing possible answers to a system of two equations to see whether they are truly answers or not. Note that each answer has to work for both equations, but if it doesn't…

From  Tom Grant 14 plays 0  

Identifying solutions to a two-step linear inequality in one variable

Demonstrating how to substitute several values for the variable in an inequality to see if they are valid solutions.

From  Tom Grant 21 plays 0  

Identifying solutions to a linear equation in one variable: Two-step equations

Shows how to substitute values for the variable in a simple equation and determine what values, if any, make it equal.

From  Tom Grant 26 plays 0  

Review: Factoring a Trinomial - Trial and Error

This shows the first method for factoring a trinomial where a is not = 1

From  Tom Grant 705 plays 0