Answer:
[tex]y=\frac{56}{x}[/tex]
Step-by-step explanation:
We are given that y varies inversely with x.
y=80 when x=0.7
We have to write complete equation of variation
According to question
[tex]y\propto \frac{1}{x}[/tex]
[tex]y=\frac{k}{x}[/tex]
Where k=proportionality constant
Substitute the values then we get
[tex]80=\frac{k}{0.7}[/tex]
using multiplication property of equality
[tex]k=80\times 0.7=56[/tex]
Therefore, the equation is given by
[tex]y=\frac{56}{x}[/tex]
