The expression c = kh² represents k as the constant and c varies directly as the square of h.
What are the ratio and proportion?
The ratio is the division of the two numbers.
For example, a/b, where a will be the numerator and b will be the denominator.
Proportion is the relation of a variable with another. It could be direct or inverse.
Given that c varies directly so it means it is a direct proportion, not the inverse.
For example, x ∝ y is a direct proportion while x ∝ 1/y is an inverse proportion.
So,
c ∝ h²
Now if we remove proportion then there will be a constant of proportionality.
So,
c = kh².
Hence "The expression c = kh² represents k as the constant and c varies directly as the square of h".
For more information about ratio and proportion,
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