8826064 8826064 09-10-2020 Mathematics contestada .The quantities xxx and yyy are proportional. xxx yyy 444 101010 555 12.512.512, point, 5 101010 252525 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