FIN 490 SU Valuation Principle Discussion

I need help with a Mathematics question. All explanations and answers will be used to help me learn. Review the valuation principle and how it helps a financial manager make  decisions. In the early 1980s, inflation was in the double digits and  the yield curve sloped sharply downward. What did this yield curve  suggest about the financial manager’s / investor’s expectations about  future rates? Explain how a downward sloping yield curve affects the  prices of existing long-term bonds and stocks trading in the secondary  market, assuming this change in the yield curve is the only change that  occurs. Would you characterize the change in the yield curve as a  systematic or unsystematic risk?