Systems of Linear Equations in Two Variables

First Quarter Exam 2015 - Math Grade 8 / First Quarter Exam 2015 - Math Grade 8

Sample Question

Which of the following illustrates a system of linear equations in two variables?

  • [%\left\{\begin{array}{l}y=x^4-1\\y=x^4-64\end{array}\right.%]
  • [%\left\{\begin{array}{l}y=x^2+4\\x^2-36=y\end{array}\right.%]
  • [%\left\{\begin{array}{l}x+y=12\\x+5y=44\end{array}\right.%]
  • [%\left\{\begin{array}{l}y=2^x\\y=2^y\end{array}\right.%]

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