Answer:
[tex]y=\frac{18}{5}x[/tex]
Explanation:
1 km = 1000 m
1 h = 60 minutes × 60 seconds
⇒1 h = 3600 seconds
First we need to convet kilometers to meter. We do this by multiplying y with 1000. Then we convert the hour into second, this is done by dividing y by 3600.
[tex]x\ m/s=y\ km/h\\\Rightarrow \frac{y\times 1000}{3600}=x\ m/s\\\Rightarrow y\frac{5}{18}=x\\\Rightarrow y=\frac{18}{5}x[/tex]
So, [tex]\mathbf{y=\frac{18}{5}x}[/tex]
