Question

P is inversely proportional to V. When V = 8, P = 5 Find a formula for Pin terms of V.

Answer 1

Answer:

P = 40/V.

Step-by-step explanation:

P = k/V where k is a constant

Substituting the given values:

5 = k/8

k = 5*8 = 40.

So the formula is:

P = 40/V

Answer 2

Answer:

P = $\frac{40}{V}$

Step-by-step explanation:

given P is inversely proportional to V then the equation relating them is

P = $\frac{k}{V}$

to find k use the condition when V = 8 , P = 5 , then

5 = $\frac{k}{8}$ ( multiply both sides by 8 to clear the fraction )

40 = k

P = $\frac{40}{V}$ ← equation of proportion