alyssacorbin
alyssacorbin
17-08-2014
Mathematics
Answered
Solving systems help?
Y=4x-9
Y=x-3
Answer :
Аноним
Аноним
18-08-2014
[tex]\left\{\begin{array}{ccc}y=4x-9\\y=x-39\end{array}\right\\\\substitute:\\\\4x-9=x-39\\4x-x=-39+9\\3x=-30\\x=-30:3\\x=-10\\\\y=-10-39=-49\\\\Answer:x=-10\ and\ y=-49\to(-10;-49)[/tex]
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