Answer:
see explanation
Step-by-step explanation:
Given that y varies inversely as x then the equation relating them is
y = [tex]\frac{k}{x}[/tex] ← k is the constant of variation
To find k use the condition x = 2.5 when y = 100
k = yx = 100 × 2.5 = 250
y = [tex]\frac{250}{x}[/tex] ← equation of variation
