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This page provides a list of educational videos related to Model Proportions. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Model Proportions.
Using Cross Multiplication to Solve Proportions
By Davitily
The instructor uses an electronic chalkboard to demonstrate how to use cross multiplication to solve for a missing variable in a proportion. One example is modeled using a step by step approach.
Identifying Exponential Models
By Khan Academy
Watch this video to learn how to identify exponential models. An exponential function has the form y = Arx and models when a constant change in x results in a proportional rate of change in y. In other words, exponential functions grow by equal factors over equal intervals.
How to use Ratios and Proportions to Solve Real World Problems
By mrtedmartin
Instructor uses a Power Point presentation to demonstrate how to use ratios and proportions to solve problems real world problems. Unit rates are discussed and definitions are given. Solving unit rate problems are modeled and a calculator is used for computation.
Division of Rational Expressions
By MrLovellFord
Shows how to divide two rational expressions by mulitplying the first expression by the reciprocal of the second, then simplifying.
Example Problem - Multiplying Rational Expressions
By Khan Academy
Watch this example of muliplying rational expressions, simplifying the solution (writing it in lowest terms), and determining the domain of the solution.
Example Problem - Multiplying Rational Expressions
By Khan Academy
Watch this example of muliplying rational expressions, simplifying the solution (writing it in lowest terms), and determining the domain of the solution.
Multiplying and dividing rational expressions 2 | Algebra II | Khan Academy
By Khan Academy
Khan Academy presents Multiplying and Dividing Rational Expressions 2, an educational video resource on math.
Exponents: Multiplying Variables with Rational Exponents – Basic Ex 2
By PatrickJMT
Exponents: Multiplying Variables with Rational Exponents – Basic Ex 2
Matrices: Basic Matrix Operations (add, subtract, multiply by constant)
By PatrickJMT
Matrix Operations - Adding, Subtracting, and Multiplying by a constant for matrices is discussed. For more free math videos, visit http://PatrickJMT.com!
Trigonometric Ratios of Special Angles
By AlRichards314
This video shows us how we determine the trigonometric ratios for the angles of 30 degrees, 45 degrees, and 60 degrees. Keep in mind that the ratios of the sides corresponding to these angles never change (even though the side lengths may change). That means that knowing the values for these trig ratios means you'll know them forever! They won't change!
Multiplying polynomials example | Polynomial and rational functions | Algebra II | Khan Academy
By Khan Academy
u11_l2_t3_we4 Multiplying Polynomials. All Khan Academy content is available for free at www.khanacademy.org
Multiplying and simplifying rational expressions | Algebra II | Khan Academy
By Khan Academy
Khan Academy presents Multiplying and Simplifying Rational Expressions, an educational video resource on math.
Exponents: Multiplying Variables with Rational Exponents – Basic Ex 1
By PatrickJMT
Exponents: Multiplying Variables with Rational Exponents – Basic Ex 1
ADDITION & SUBTRACTION OF RATIONAL EXPRESSIONS WITH DIFFERENT DENOMINATORS (ANIMATION)
By Jerry Llevada
ADDITION & SUBTRACTION OF RATIONAL EXPRESSIONS WITH DIFFERENT DENOMINATORS (ANIMATION)
Trigonometric functions and side ratios in right triangles
By Khan Academy
Sal is given a diagram with multiple right triangles and is asked to match different expressions with different trig values.
Trigonometric functions and side ratios in right triangles
By Khan Academy
Sal is given a diagram with multiple right triangles and is asked to verify identities relating to trig ratios in those triangles.
Trigonometric functions and side ratios in right triangles
By Khan Academy
Sal explains how the trigonometric ratios are derived from triangle similarity considerations.
Graphs of piecewise linear functions
By Khan Academy
Sal explains what a piecewise function is, and finds the formula of a piecewise function given its graph.
Graphs of piecewise linear functions
By Khan Academy
Sal graphs a piecewise function given its formula. In this case, the function consists of three separate lines.