The quantities xxx and yyy are proportional.
xxx yyy
111111 1\dfrac{2}{9}1
9
2
​
1, start fraction, 2, divided by, 9, end fraction
212121 2\dfrac{1}{3}2
3
1
​
2, start fraction, 1, divided by, 3, end fraction
454545 555
Find the constant of proportionality (r)(r)left parenthesis, r, right parenthesis in the equation y=rxy=rxy, equals, r, x.
r =r=r, equals