Algebra 1HardSystems of Equations ShareSystems of Equations · Hard problemHow many solutions does this system have?{4x−4y=9−8x+8y=−20\begin{cases} 4 x - 4 y = 9 \\ - 8 x + 8 y = -20 \end{cases}{4x−4y=9−8x+8y=−20Ano solutionBexactly one solutionCinfinitely many solutionsCheck Show answer Walk through it step by step Practice more like this Review this concept