x \(\alpha\sqrt y\) x = k\(\sqrt y\) 81 = k\(\sqrt9\) k = \(\frac{81}{3}\) = 27 therefore, x = 27\(\sqrt y\) y = 1\(\frac{7}{9}\) = \(\frac{16}{9}\) x = 27 x \(\sqrt{\frac{16}{9}}\) = 27 x \(\frac{4}{3}\) dividing 27 by 3 = 9 x 4 = 36