Illustrating Situations that Involves Variation.pptx

SLIDE PRESENTATION ON TYPES OF VARIATION

1. Before Lesson Response If the phrase is a direct variation, write D, if it is an inverse variation, write I, and if the relationship is neither a direct nor inverse variation, write it N. The number of hours to finish a job to the number of men working. The amount of money raised in a concert to the number of tickets sold. The time a teacher spends checking papers to the number of students

2. Analyze the scenario

3. Analyze the scenario

4. Variation The two given scenarios show a relationship between two quantities in which a change in one quantity produces a change in another quantity

5. Direct variation If the ratio of two quantities is constant, it means that one quantity varies directly as the other quantity, or the two quantities are in direct variation.        

6. Direct variation In symbols, or where is the constant of variation.   varies directly as   is directly proportional to   is proportional to   If increases, then increases; or if decreases, then decreases.  

7. Which shows direct variation? The number of hours to finish a job to the number of men working The amount of money raised in a concert to the number of tickets sold The time a teacher spends checking papers to the number of students Not direct DIRECT DIRECT