Direct Variation- When one of the variables increases or decreases, the other one increases or decreases.
You are watching: Identify the variation as direct, inverse, joint or combined.
Inverse Variation- When one of the variables increases, the other one decreases and vice versa.
Joint Variation- Where more than two variables are related directly.
Combined Variation- A combination of direct or joint variation, and indirect variation.
So in this case, r is in combined variation with s and t. r is in direct variation with s and inverse variation with t. And c is the proportionality constant.
Komok <63>4 months ago
Direct, inverse, joint and combined
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