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If Y divided by X always gives you the same number then it is direct variation. I remember this because direct and divide by start with “D” Another short cut
Each X is multiplied by 3 to get the Y value Example as table X123 Y369
Example as graph
Y=3x Y=1/2X 2y=X because divide both sides by 2 resulting Y=1/2X Example as equation
1.Y=X+3 2.(0,0)(1,6)(2,12) 3. You try which examples are direct variation X123 Y456
Relationship between two variable written Y= K/x Huh, again? If Y equals a constant divided by a given X, then it is an inverse variation. Inverse variation
If you multiple X and Y and they always equal the same constant then it is an inverse variation Another short cut
Example as graph
x6212 y6183 Example as chart
This time you create a chart containing an inverse variation. You try
Direct and Inverse Variations Direct Variation When we talk about a direct variation, we are talking about a relationship where as x increases, y increases.
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© 2007 by S - Squared, Inc. All Rights Reserved.
Aim: How do we solve addition and subtraction equations? Equation Expressions y + 5 y + 5 = 20 We can evaluate an expression, when given the value of the.
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