[tex]\begin{gathered} 12.\text{Point }1\text{ (}3,8\text{)} \\ \text{relationship =}\frac{8}{3} \\ \text{Point 4 (}9,24\text{)} \\ \text{relationship =}\frac{24}{9} \\ \text{relationship =}\frac{8}{3} \\ \text{The equation that represents the proportional relationship is y=}\frac{8}{3}x \\ \\ 10.\text{ } \\ \text{Point }1\text{ (}3,8\text{)} \\ \text{relationship =}\frac{8}{3} \\ \text{Point 2 ( }6,15\text{)} \\ \text{relationship =}\frac{15}{6} \\ \text{relationship =}\frac{5}{2} \\ \text{Point 3 ( 8},21\text{)} \\ \text{relationship =}\frac{21}{8} \\ \text{Point 4 (}9,24\text{)} \\ \text{relationship =}\frac{24}{9} \\ \text{relationship =}\frac{8}{3} \\ The\text{ points (}3,8\text{) and (}9,24\text{) represent the same proportional relationship} \\ \\ 11. \\ \text{the constant of proportiona}lity\text{ is }\frac{8}{3} \end{gathered}[/tex]
