Joint Variation and Direct Variation

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Questions and Answers

What is joint variation equivalent to, with respect to the number of variables?

Direct variation = with two or more variables Inverse variation = with two variables Combined variation = with three variables

If 'a' varies jointly as 'b' and 'c', what is the equation that represents this relationship?

a = kb/c = where k is the constant of variation a = k/bc = where k is the constant of variation a = kbc = where k is the constant of variation a = bc/k = where k is the constant of variation

In the equation a = kbc, what does 'k' represent?

the variable of variation = a the product of b and c = bc the constant of variation = k the ratio of a to bc = a/bc

What is the formula to find the constant of variation 'k'?

<p>k = a/bc = where a, b, and c are the variables k = a/b + c = where a, b, and c are the variables k = abc = where a, b, and c are the variables k = a - bc = where a, b, and c are the variables</p> Signup and view all the answers

What is the relationship between 'a' and 'bc' when 'a' varies jointly as 'b' and 'c'?

<p>a is inversely proportional to bc = a = k/bc a is directly proportional to bc = a = kbc a is directly proportional to b and inversely proportional to c = a = kb/c a is inversely proportional to b and directly proportional to c = a = c/kb</p> Signup and view all the answers

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