VARIATION Std : 7 Subject : Maths Chennai High School –MMDA II
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VARIATIONStd : 7Subject : MathsChennai High School –MMDA II
Variation
Direct Variatio
n
Inverse Variatio
n
Direct Variation
If an increase(↑) [decrease(↓)] in one quantity produces a proportionate increase(↑) [decrease(↓)] in another quantity, then the two quantities are said to be in direct variation.
Direct Variation
Costs you more You buy
more pens?
Inverse Variation
If an increase(↑) [decrease(↓)] in one quantity produces a proportionate [decrease(↓)] increase(↑) in another quantity, then the two quantities are said to be in direct variation.
Inverse Variation
Increase in temperature
Cutting down of trees
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