Mathematics for IGCSE & O level - Proportion (Section 3 - No. 3)
Which statement about the relationship between x and y is true if y = k/x, where k is a constant?
y is directly proportional to x.
y is inversely proportional to x.
y is proportional to x^2.
y is constant.
คำอธิบาย
y = k/x defines an inverse proportion.