[tex]1. 3x - 11y = 7 \\ 2. \: 5x {}^{2} + 4y = 6 \\ 3. \: x - \frac{1}{9}y = - 9 \\ 4. \: \frac{1}{x} + 8 \sqrt{y} = 10 \\ 5. \: y - 2x - 15 = 0 [/tex]
Write YES if each equation below is a linear equation in two variables,otherwise,NO

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advance thank you​