[tex]y = \frac{2}{3} x - 8 \\ y = 2.4 \\ \frac{2}{3} x - 8 = 2.4 \\ \frac{2}{3} x = 2.4 + 8 \\ \frac{2}{3} x = 10.4 \\ x = 10.4 \div \frac{2}{3} \\ x = \frac{52 \times 3}{5 \times 2} \\ x = \frac{156}{10} \\ x = 15.6[/tex]