Question

A is proportional to B with a proportionality constant of 2.5

Answer 1

If A is proportional to B with a proportionality constant of 2.5  then the required expression for the statement is $A=2.5B$

There are 3 types of variation

• The direct variation
• The inverse variation
• Joint variation

Since we have two variables A and B, we can apply the direct variation

If A  is directly proportional to B, this is expressed as:

• $A\alpha B$

• $A=kB$

where k is the constant of proportionality

If the proportionality constant is 2.5, hence;

• $A= 2.5B$

Hence the required expression for the statement is $A=2.5B$

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