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Khan Academy: Algebra: Direct Variation 1 Instructional VideoKhan Academy: Algebra: Direct Variation 1 Instructional Video
Publisher
Khan Academy
Curator Rating
Educator Rating
Not yet Rated
Instructional Video

Khan Academy: Algebra: Direct Variation 1

Curated by ACT

This video demonstrates how to solve a word problem that involves a directly proportional relationship and rates. Given the price of gas per gallon and the total amount of money you must figure out how many gallons of gas could be bought. Practice problems available. [3:39]

3 Views 0 Downloads
Concepts
direct variation, linear equations

Additional Tags

directly proportional relationship, proportional relationship, using rates, khan academy, khan academy math
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Resource Details

Grade
9th - 10th
Subjects
Math
2 more...
Resource Type
Instructional Videos
Audiences
For Administrator Use
2 more...
Lexile Measures
0L

See similar resources:

Lesson Plan

Determining Direct Variation

Virginia Department of Education
Once learners realize what direct variation is, they see it's just a type of linear function. The lesson poses a general question that leads to the creation of the y = kx formula. The resource includes discussion prompts and ideas for...
8th - 11th Math
CCSS: Adaptable
Instructional Video

Direct Variation 1

Khan Academy
This video solves a basic direct variation problem: the cost of buying gas for your car varies directly with the number of gallons you need to purchase. Sal shows how to write a direct variation equation based on this problem and solves...
4 mins 6th - 9th Math
Instructional Video

Khan Academy: Algebra: Direct Variation 1

Khan Academy
Video solving a direct variation problem about amounts of gas and the cost of filling up a car. Includes link to additional practice at the top of the video. [3:39]
9th - 10th Math
Instructional Video

Khan Academy: Algebra: Direct Variation Models

Khan Academy
This video demonstrates how to create a direct variation model, or a linear equation, given a word problem that deals with rate of change. It also shows how to solve the equation and graph the direct variation model. Practice problems...
9th - 10th Math
Instructional Video

Khan Academy: Algebra: Direct Variation Application

Khan Academy
This video demonstrates how to solve a word problem involving a direct variation. It shows how to set up a linear equation for a directly proportional relationship and solve for the constant of proportionality. [2:02]
9th - 10th Math
CCSS: Adaptable
Instructional Video

What's the Direct Variation or Direct Proportionality Formula?

Curated OER
Direct variation? Constant of variation? Constant of proportionality? Two variables related? If one variable changes what happens to the other variable? What do all these terms have to do with each other? Watch this video as the...
3 mins 6th - 9th Math
Instructional Video

How Do You Use the Formula for Direct Variation?

Curated OER
Use the formula for direct variation to solve for y, after finding the value of k. When you use the formula and determine the value of k and x, you can plug in those values to determine the value of y. A quick tutorial that takes you...
2 mins 8th - 9th Math
Instructional Video

How Do You Write an Equation for Direct Variation from a Table?

Curated OER
y=kx. This is the direct variation equation. You have been given a table of values. So look at the table and figure out how to use this equation to write an equation that represents what is happening in the table. Does the equation...
3 mins 8th - 11th Math
Instructional Video

How Do You Write an Equation for Direct Variation Given a Point?

Curated OER
This problem may sound a bit confusing, but the teacher does a great job explaining what direct variation is. So watch this video and learn about k. It is a pretty direct explanation.
2 mins 8th - 11th Math
Instructional Video

What Does Direct Variation Look Like on a Graph?

Curated OER
In a graph of a direct variation, the line must pass through the origin, (0,0). See the teacher illustrate what that looks like on a graph.
2 mins 8th - 9th Math
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