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Question 123153: Hi,
Here is the question: The points graphed on the grid below satisfy which of the following equations?
(0,1), (-1,0), (-2,-1)
the possible solutions are:
x-y=1
x-y=-1
2y-x=0
x=0
y=0
I totally don't remember how to do this, can you help?
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
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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