Answer:
r = 1/3
Step-by-step explanation:
The constant r must remain the same for all pairs of x and y that we use.You can apply any pair of values from your question..then substitute the values into the equation
If x = 15 and y = 5...then;
;5 = 15r...then divide both sides by 15
; r = 5/15....then reduce it to its lowest terms..by dividing the numerator and the denominator with 5
; r = 1/3
Or take the pair of,
x = 33 and y = 11
;11 = 33r...then divide both sides by 33
;r = 11/33...then reduce it to the lowest terms by dividing the numerator and denominator with 11
;Hence r..still remains as 1/3