Algebra 1HardSystems of Equations ShareSystems of Equations · Hard problemHow many solutions does this system have?{2x+4y=−9−4x−8y=21\begin{cases} 2 x + 4 y = -9 \\ - 4 x - 8 y = 21 \end{cases}{2x+4y=−9−4x−8y=21Ano solutionBexactly one solutionCinfinitely many solutionsCheck Show answer Walk through it step by step Practice more like this Review this concept