Answer:
[tex]\displaystyle y=2.4[/tex]
Step-by-step explanation:
[tex]{\displaystyle y\propto \frac{1}{x} }[/tex]
[tex]\displaystyle y=\frac{k}{x}[/tex]
[tex]\displaystyle 3=\frac{k}{4}[/tex]
[tex]\displaystyle 3 \times 4=k[/tex]
[tex]\displaystyle k=12[/tex]
[tex]\displaystyle y=\frac{12}{5}[/tex]
[tex]\displaystyle y=2.4[/tex]
