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Identify the equations as parallel lines, perpendicular lines, or neither​

Identify the equations as parallel lines, perpendicular lines, or neither​-example-1

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Answer: These two lines are perpendicular.

Explanation:

The slope of -2x+3y=11 is 2/3, and the slope of 6y=4-9x is -3/2. Since 2/3 and -3/2 are opposite reciprocals, their intersection of their lines is perpendicular, or 90 degrees.

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