What happens to the future value of a perpetuity if interest rates increase? What if interest rates

Question:

What happens to the of a if interest rates increase? What if interest rates decrease?

Future Value
Future value (FV) is the value of a current asset at a future date based on an assumed rate of growth. The future value (FV) is important to investors and financial planners as they use it to estimate how much an investment made today will be worth... Perpetuity
Perpetuity refers to payments that are made without an end or maturity date. A perpetuity is classified as an annuity, which is something that earns a dividend or receives a payment at a regularly scheduled interval, generally yearly. So, how...