Question

Is y=2.5/x a proportional relationship

Answer 1

Step-by-step explanation:

A proportional relationship is one in which two quantities vary directly with each other. We say the variable yy varies directly as xx if:

y=kxy=kx

for some constant kk , called the constant of proportionality .

(Some textbooks describe a proportional relationship by saying that " yy varies proportionally with xx " or that " yy is directly proportional to xx .")

This means that as xx increases, yy increases and as xx decreases, yy decreases-and that the ratio between them always stays the same.

The graph of the proportional relationship equation is a straight line through the origin.