Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 4 - Quadratic Functions and Equations - 4-6 Complete the Square - Practice and Problem-Solving Exercises - Page 239: 96

Answer

The solution is $(2, 0)$.

Work Step by Step

We can combine the two equations: $2x + y = 4$ $3x - y = 6$ Add the equations together: \begin{align*} 2x + y = 4\\ \underline{3x - y = 6}\\ 5x = 10 \end{align*} Divide both sides of the equation by $5$: $$x = 2$$ Plug this value for $x$ into the first equation to find $y$: $$2(2) + y = 4\\ 4 + y = 4\\ y=0$$ The solution is $(2, 0)$.
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