In Exercise 19 through 24, rotate exes to identify the graph of each equation and write each

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In Exercise 19 through 24, rotate exes to identify the graph of each equation and write each equation in standard form?
1. xy = 1
2. x2 + y2 + 4xy = 9
3. 9x2 + 6y2 + 4xy - 5 = 0
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