Answer:
y = 32
Explanation:
Given that y varies directly as x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 16 when x = 8, then
16 = 8k ( divide both sides by 8 )
2 = k
y = 2x ← equation of variation
When x = 16, then
y = 2 × 16 = 32