The ordered pair (1, -5) is a solution for the system x + 2y = -9 and x - y = 6 True False

asked Dec 25, 2015 193k views

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2 votes

TRUE
(1) + (-10) = -9
(1) - (-5) = 6

Adam Evans answered Dec 26, 2015

6.7k points

4 votes

$1+2\cdot(-5)=-9\\ 1-10=-9\\ -9=-9\Rightarrow \hbox{ true}\\\\ 1-(-5)=6\\ 1+5=6\\ 6=6 \Rightarrow \hbox{ true}$

TRUE

ToNoY answered Dec 30, 2015

by ToNoY

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