Mathematics, 11.01.2022 09:30, emmakatemashbu
Is anyone good at math and can help with this, or at least the first one and explain how to do it?
Answers: 3
![9x+4y=-16\implies \stackrel{\textit{using x = 0}~\hfill }{9(0)+4y=-16}\implies 4y=-16 \\\\\\ y=\cfrac{-16}{4}\implies y=-4~\hspace{10em}(0~~,~~-4) \\\\[-0.35em] ~\dotfill\\\\ 9x+4y=-16\implies \stackrel{\textit{using x = -4}~\hfill }{9(-4)+4y=-16}\implies -36+4y=-16 \\\\\\ 4y=20\implies y = \cfrac{20}{4}\implies y = 5~\hspace{10em}(-4~~,~~5)](/tpl/images/2615/2531/bad7b.png)
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Is anyone good at math and can help with this, or at least the first one and explain how to do it?
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