Solve the Nonlinear System of Equations for Real Solutions $\left\{ \begin{array} { r } 20 x - y = 1 \\x y = 1\end{array} \right.$

question 100

Multiple Choice

Solve the nonlinear system of equations for real solutions.
- $\left\{ \begin{array} { r } 20 x - y = 1 \\x y = 1\end{array} \right.$

• A) \(\left( \frac { 1 } { 4 } , 4 \right) , \left( - \frac { 1 } { 5 } , - 5 \right)\)
• B) \(\left( 4 , \frac { 1 } { 4 } \right) , \left( - 5 , - \frac { 1 } { 5 } \right)\)
• C) \(\varnothing\)
• D) \(( - 4,4 ) , ( 5 , - 5 )\)

---

Definitions:

Bond Ratings

A grade given to bonds that indicates their credit quality, with higher ratings suggesting a lower risk of default.

DBRS

A credit rating agency that evaluates the creditworthiness of entities and their issued debt.

Default Risk

The risk associated with the possibility of a borrower failing to make required payments on their debt obligations.

Interest Rate Risk Premium

The compensation investors demand for bearing interest rate risk.