Answer: y = 0.3
Step-by-step explanation:
The statement is expressed as:
y ∝ 1/x
To convert this to an equation, we introduce k, which is the constant of variation.
y = k × 1/x
y = k/x
To find k use the given condition that y = 0.8 when x = 1.8
y = k/x
0.8 = k/1.8
k = 0.8 × 1.8
k = 1.44
When x = 4.8
y = k/x
y = 1.44/4.8
y = 0.3