# Chapter 3 - Section 3.1 - Systems of Linear Equations in Two Variables - 3.1 Exercises - Page 226: 11

It is a solution.

#### Work Step by Step

We substitute $x$ by 8 and $y$ by $-9$, in order to check if the ordered pair is a solution: First equation: $8-(-9)=17$ $\checkmark$ Second equation: $8+(-9)=-1$ $\checkmark$ The ordered pair is a solution.

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