Which is a solution to the equation y = 2x – 5?
A.
(3, 11)
B.
(2, 1)
C.
(1, –3)
D.
(5, –5)
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OpenStudy (anonymous):
vague question
OpenStudy (anonymous):
thats exactly how they gave it to me :/
OpenStudy (anonymous):
ohhh i think i get it
OpenStudy (anonymous):
a,b,c,and d are numbers that could replace x and y so (x,y)
OpenStudy (anonymous):
right?
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OpenStudy (youngstudier):
@jacob1728 what do you think the answer is?
OpenStudy (anonymous):
d?
OpenStudy (youngstudier):
Nope.
Plug the answer choices into the equation.
So, let's start with plugging in answer choice A.
The equation is: y = 2x - 5
Plug in answer choice A
And it's:
11 = 2*3 - 5
Now solve the right side of the equation.
Does it equal 11?
OpenStudy (anonymous):
no
OpenStudy (youngstudier):
Yep, so let's plug in answer choice B to see if that works.
1 = 2*2 - 5
1 = ?
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OpenStudy (anonymous):
nah its b because 2*2 is 4 and 4-5 is -1 i think
OpenStudy (anonymous):
its not*
OpenStudy (youngstudier):
Exactly! :D
Next step is to plug in C.
-3 = 2*1 - 5
-3 = ?
OpenStudy (anonymous):
sorry i accidentaly closed openstudy
OpenStudy (anonymous):
anyways..
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OpenStudy (anonymous):
2*1=2-5 is -3 yah c is it
OpenStudy (youngstudier):
Correct! ^_^
OpenStudy (anonymous):
k can you help me w/ 4 more?(maybe less if i understand the questions)