Question

How do you know whether two quantities x and y are proportional?
a. Every ratio yx for related pairs of x and y is equivalent.
b.Every sum x + y is the same for related pairs of x and y.
c.Every x term is a multiple of the previous term.
d.Every difference x – y is the same for related pairs of x and y.

Answer 1

Answer: a. Every ratio yx for related pairs of x and y is equivalent.

Step-by-step explanation: The proportionality between two variables x and y is established using the proportionality relation.

x = ky where k is a constant and k = x / y. Hence every ratio of both numbers for a rated pair are equivalent once x and y ≠ 0

Answer 2

Answer:

A.

Explanation:

when two quantities are proportional they are equivalent, which is stated in answer A.

(I also took the quiz and answered A. and got it correct)