Question

Which equation has a constant of proportionality equal to 4?

• A. xy=4
• B. $y=\frac{1}{4}x$
• C. y=5x
• D. 4x=4y

Answer 1

The correct option is A

xy=4

xy=4 has a constant of proportionality equal to 4.

$y=\frac{1}{4}x$ has a constant of proportionality equal to $\frac{1}{4}$

y=5x has a constant of proportionality equal to 5.

4x=4y is same as y=x, and has a constant of proportionality equal to 1