Lesson: Direct Variation Mathematics • Third Year of Preparatory School

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In this lesson, we will learn how to describe direct variation between two variables and use this to solve word problems.

Students will be able to

identify direct variation and find the constant of proportionality/variation (unit rate) between two quantities from their graph,
identify direct variation from a table of values, a description, or an equation and find the constant of proportionality/variation (unit rate) between two quantities,
solve for a missing value given a proportional relationship,
write an equation describing direct variation,
solve real-life word problems involving direct variation.