Direct Variation

Oct 12, 2014

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Direct Variation. A direct variation is…. A linear equation The y-intercept must be zero!!!! The graph of a direct variation will ALWAYS go through the origin (0,0). In the equation, there will only be numbers with the variables (coefficients). The only other number used can be zero.

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Direct Variation

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Direct Variation

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Direct Variation

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Direct Variation

Direct Variation. Algebra I Mastery Cate Condon. The store you go into in the mall sells t-shirts. You are looking around and you see that 3 t-shirts cost $15 total. Given this information how much would 5 t-shirts cost?. We can set up a proportion: 3 5 15 c Cross multiply: 3c = 5*15= 75

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Direct Variation

Direct Variation. Chapter 5.2. Direct Variation. Equation of Direct Variation. y = kx. y = k x. Coefficient of Variation. Direct Variation. When you see: “y varies direcly as x” write. y = kx. Direct Variation.

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Direct Variation

Direct Variation. What is it and how do I know when I see it?. Definition: Y varies directly as x means that y = kx where k is the constant of variation. (see any similarities to y = mx + b?) Another way of writing this is k = . In other words:

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Direct Variation

Direct Variation. By Samuel Chukwuemeka ( Samdom For Peace). Objectives. At the end of this presentation, we shall Understand the meaning of variation Be familiar with the vocabulary terms Know the types of variation Demonstrate the concepts of direct variation

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Direct Variation

Direct Variation. Unit 7 Day 1. Vocabulary:. Direct Variation : a function in the form y = kx Constant of Variation : k; the coefficient of x. 1 3. 2 3. y = – + x. Is the equation a direct variation? If it is, find the constant of variation. a. 2 x – 3 y = 1.

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Direct Variation

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Direct Variation

Direct Variation. What is it and how do I know when I see it?. Direct Variation. When we talk about a direct variation, we are talking about a relationship where as x increases, y increases or x decreases, y decreases at a CONSTANT RATE. Definition:

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Direct Variation

Direct Variation. What is it and how do I know when I see it?. What is a Direct Variation or a Direct Proportion?. Used to compare two values and to see how one value affects the other value

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Direct Variation

Direct Variation. Honors Math – Grade 8. Get Ready for the Lesson. It costs $2.25 per ringtone that you download on your cell phone. If you graph the ordered pairs the slope of the line is 2.25.

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Direct Variation

Direct Variation . Objectives. To learn what direct variation is To solve problems using direct variation To solve real-life problems using direct variation. What is Direct Variation?. Direct variation means that in an equation, one term is multiplied by a constant to get the other term.

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Direct Variation

Direct Variation. Direct Variation. Direct Variation. When one thing gets larger, the other gets larger. Direct Variation. When one thing gets larger, the other gets larger. For Example:. Direct Variation. When one thing gets larger, the other gets larger. For Example:

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Direct Variation

Direct Variation. Find the slope:. (5, 8) and (-2, 12). State which variable is independent and which is dependent. Then Find the rate of change:. Snow is 0.02 m deep after 1 hour and 0.06 m deep after 3 hours.

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Direct Variation

Direct Variation. Direct Variation. A function of the form y = k x , k ≠ 0 and k is the constant of variation. The variables x and y are said to vary directly with each other. Identifying a direct variation given an equation.

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Direct Variation

Direct Variation. y = kx. A direct variation is…. A linear function Equation can be written in the form; y = mx ; m  0 or y = kx ; k  0 The y-intercept must be zero!!!! Graphs a line passing through the origin. Constant of Variation: y = k x.

490 views • 12 slides

Direct Variation

Direct Variation. What is it and how do I know when I see it?. Definition: Y varies directly as x means that y = kx where k is the constant of variation. (see any similarities to slope?) Another way of writing this is k =. In other words: The change in Y over the change in x!

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Direct Variation

Direct Variation. What is it and how do I know when I see it?. Definition: Y varies directly as x means that y = kx where k is the constant of proportionality. Another way of writing this is k =. (Take notes – write this down). In other words:

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Direct Variation

Direct Variation. Section 1.9. Notes: Direct Variation. When two variable quantities have a constant ratio, their relationship is called a ________________. The constant ratio is called the _____________________. The constant of variation is also known as the _____________________.

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Direct Variation

Direct Variation. Warm-Up. Course 3. Insert Lesson Title Here. Warm-Up Day 2. Course 3. Insert Lesson Title Here. Direct Variation. 12-5. Course 3. Insert Lesson Title Here. Vocabulary. Direct Variation. 12-5. Helpful Hint.

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