Mathematics
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OpenStudy (spanishrose):
Which ordered pair is a solution of the equation y=x-3?
A) (-2,5)
B) (-5,2)
C) (2,5)
D) (5,2)
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OpenStudy (agent0smith):
The points are given as (x, y)
So plug in each choices x and y values into y=x-3 and see if it's correct.
OpenStudy (spanishrose):
Okay so I think it's 2,5
OpenStudy (spanishrose):
Am I wrong??
OpenStudy (agent0smith):
plug in x=2 and y=5 into y=x-3 and what do you get?
OpenStudy (spanishrose):
2
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OpenStudy (agent0smith):
There should be an equals sign in the middle
Show all your work.
OpenStudy (spanishrose):
Nevermind, it's not 2
OpenStudy (spanishrose):
2 = 5 + -3
5 + -3 = 2
2 = 2
2 + -2 = 2 + -2
2 + -2 = 0
0 = 2 + -2
2 + -2 = 0
0 = 0
so zero
OpenStudy (spanishrose):
Wait
OpenStudy (spanishrose):
I did my own equation wrong?? I added a plus sign
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OpenStudy (agent0smith):
Which point are you doing? Remember the points are (x, y). x first, y second.
OpenStudy (agent0smith):
And you don't solve the equation.
2 = 5 + -3
5 + -3 = 2
2 = 2
Is that true or false? Is 2 equal to 2?
OpenStudy (spanishrose):
True
OpenStudy (agent0smith):
But again I don't know which point you were doing
OpenStudy (spanishrose):
I am so lost omg I don't even know what I'm doing. I'm just going to start over and take your initial advice because I have no idea where I veered off
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OpenStudy (agent0smith):
Start with the first point. Plug it into the equation.
OpenStudy (spanishrose):
I think now it's D, 5,2
OpenStudy (agent0smith):
To be sure:
plug in x=5, y=2
y=x-3
2 = 5-3
Is that true?
OpenStudy (spanishrose):
Yes
OpenStudy (agent0smith):
Yes.
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rebeccaxhawaii (rebeccaxhawaii):
gg