Question 82972: Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?
I came up with (–4, 0), (–3, –7)as my answers. I think I am right.
-4-0=4
-3-(-7)=4
Answer by Edwin McCravy(20060)   (Show Source):
You can put this solution on YOUR website!
Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?
Let's plug them all in and see:
------------------------
Plug in (x, y) = (3, 1)
x – y = 4
?
3 - 1 = 4
?
2 = 4
Nopers, (3, 1) is not a solution to the
equation x - y = 4
----------------------------------
Plug in (x, y) = (0, -4)
x – y = 4
?
0 - (-4) = 4
?
4 = 4
Yeppers, (0, -4) is a solution to the
equation x - y = 4
----------------------------------
Plug in (x, y) = (-4, 0)
x – y = 4
?
(-4) - 0 = 4
?
-4 = 4
Nopers, (-4, 0) is not a solution to the
equation x - y = 4
----------------------------------
Plug in (x, y) = (–3, –7)
x – y = 4
?
(-3) - (-7) = 4
?
-3 + 7 = 4
?
4 = 4
Yeppers, (-3, -7) is a solution to the
equation x - y = 4
----------------------------------
I came up with (–4, 0), (–3, –7)as my answers.
I think I am right.
-4-0=4
-3-(-7)=4
Yeppers, I think you are right, too!
Edwin
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