Solve the System of Equations Using Substitution $$\left\{ \begin{array} { c } x y = 72 \\x + y = 17\end{array} \right.$$

question 39

Multiple Choice

Solve the system of equations using substitution.
- $$\left\{ \begin{array} { c } x y = 72 \\x + y = 17\end{array} \right.$$

• A) x = 9, y = 8; x = 8, y = 9
• B) x = 9, y = -8; x = 8, y = -9
• C) x = -9, y = -8; x = -8, y = -9
• D) x = -9, y = 8; x = -8, y = 9

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