Question

The quantities

�
xx and
�
yy are proportional.
�
xx
�
yy
5.8
5.85, point, 8
5.8
5.85, point, 8
7.5
7.57, point, 5
7.5
7.57, point, 5
11.2
11.211, point, 2
11.2
11.211, point, 2
Find the constant of proportionality
(
�
)
(r)left parenthesis, r, right parenthesis in the equation
�
=
�
�
y=rxy, equals, r, x.
�
=
r=r, equals

Answer 1

r = 1

Explanation:

y = rx

Use one of the given points for x and y. For example, use x = 5.8; y = 5.8.

y = rx

5.8 = r × 5.8

r = 5.8/5.8

r = 1

Answer: r = 1