The first number in an ordered pair is the x-coordinate.  The second is

the y-coordinate.





Take one of the given points and start with the first equation given.

Substitute the x coordinate for x in the equation, then the y-coordinate.

Decide if you have a true statement or not.  Do this for each point given

and for each equation given until you get to a false statement or you 

get three true statements.  The equation that gives you three true

statements, one for each point, is the correct answer





For example, the first point is (0, 1) and the first equation is x - y = 1.

Substituting:  0 - 1 = 1: clearly a false statement.  So you know that the

first equation is NOT the correct answer.





Write back and let me know which one you chose. 

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