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Mathematics 20 Online
OpenStudy (anonymous):

I don't understand x = 9

myininaya (myininaya):

it a verical line meaning its slope is undefined x=9 says whatever y is x is always 9

OpenStudy (anonymous):

Since you don't have a y coordinate, x=9 will always be a vertical line

jhonyy9 (jhonyy9):

- for what exercise you have got x=9 ?

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