Why U
Algebra 40 - Solving Inconsistent or Dependent Systems
When solving a system of linear equations in x and y with a single solution, we get a unique pair of values for x and y. But what happens when we try to solve a system with no solutions or an infinite number of solutions?
Curated Video
Understanding Variables and Expressions in Real-World Scenarios
In this video, students learn about variables and how they are used in mathematical expressions. The video explains that variables represent unknown values and can change, unlike constants. It also clarifies the difference between...
Curated Video
Equations vs Inequalities: Understanding the Difference
The video explains the difference between equations and inequalities and how to recognize them. It provides examples of real-world scenarios and how to solve them using substitution and the four basic mathematical operations. The video...
Curated Video
Graphing Simultaneous Linear Inequalities
In this video, the teacher explains how to find the solution to simultaneous linear inequalities by graphing. They cover topics such as graphing linear inequalities on a number line, using broken or solid boundary lines, and shading the...
Why U
Pre-Algebra 01 - The Dawn of Numbers
A humorous look at early attempts at creating number systems, leading up to our modern base-10 decimal number system which uses "positional notation". The story takes place on the fictitious island of Cocoloco.
Let's Tute
Variables Reducible Method - Problem Solving
In this video we will solve some problems on Variables Reducible Method
Brian McLogan
Determine a line parallel to another through a given point using slope intercept form
👉 Learn how to write the equation of a line that is parallel to a given line. The equation of a line is such that its highest exponent on its variable(s) is 1. (i.e. there are no exponents in its variable(s)). There are various forms...
Brian McLogan
Solving an equation with distributive property on both sides
👉 Learn how to solve multi-step equations with parenthesis and variable on both sides of the equation. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying...
Brian McLogan
How to solve a two step equation when your variable is multiplied by a fraction
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse...
Brian McLogan
Using one to one property to solve an exponential equation
👉 Learn how to solve exponential equations with the same base. An exponential equation is an equation in which a variable occurs as an exponent. To solve an exponential equation, we make the base of both sides of the equation to be equal...
Brian McLogan
Learn how to solve a natural logarithmic equation by using inverse operations
👉 Learn how to solve logarithmic equations. Logarithmic equations are equations with logarithms in them. To solve a logarithmic equation, we first isolate the logarithm part of the equation. After we have isolated the logarithm part of...
Brian McLogan
Learn How to Graph a Piece Wise Function With Jump Discontinuity
👉 Learn how to graph piecewise functions. A piecewise function is a function which have more than one sub-functions for different sub-intervals(sub-domains) of the function's domain. To graph a piecewise function, we graph the different...
Brian McLogan
Determining the triple angle of cosine to solve the equation
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a...
Brian McLogan
Why do we solve using elimination
👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves...
Brian McLogan
Learn to solve a system by substitution
👉Learn how to solve a system of equations by substitution. To solve a system of equations means to obtain a common values of the variables that makes the each of the equation in the system true. To solve a system of equations by...
Brian McLogan
Graphing a linear system of inequalities in standard form
👉 Learn how to graph a system of inequalities. A system of inequalities is a set of inequalities which are collectively satisfied by a certain range of values for the variables. To graph a system of inequalities, each inequality making...
Brian McLogan
Write the equation of a line given the slope and point goes through
👉 Learn how to write the equation of a line in a point-slope form. The equation of a line is such that its highest exponent on its variable(s) is 1. (i.e. there are no exponents in its variable(s)). There are various forms which we can...
Brian McLogan
Overview Translating Expressions Key Words - Online Tutor - Free Math Videos
👉 Learn how to write an algebraic expression from verbal sentence as well as writing out a sentence from a algebraic expression. To do this we need to know what words we use to express operations such as addition, multiplication,...
Brian McLogan
Linear programming how to optimize the objective function
Learn how to solve problems using linear programming. A linear programming problem involves finding the maximum or minimum value of an equation, called the objective functions, subject to a system of inequalities, called the constraints....
Curated Video
Using Properties to Solve Equations
In this video, the teacher explains how to use properties of equality to solve linear equations in one variable. The viewer will learn how to justify each step using the properties of equality and how to check their solutions. The lesson...
Brian McLogan
Master Solving a quadratic equation by factoring a trinomial when a=1
Master Solving a quadratic equation by factoring a trinomial when a=1
Brian McLogan
Graphing a system of equations to find an inconsistent solution
👉To solve a system of equations means to obtain a common x-value and a common y-value that makes the each of the equation in the system true. To solve a system of equations by graphing means to obtain the point of intersection (if any)...
Brian McLogan
Graph a system of 4 inequalities with horizontal and vertical
In this video playlist you will learn how to solve a system of equations or inequalities by algebraic methods such as substitution and elimination and graphing. We will then finish the unit by exploring how to optimize an objective...
Brian McLogan
Solve equations using the double angle formula
👉 Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a double angle we will apply the identities to create an equation that can help solve by inverse operations or factoring. We...