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Mathematics 17 Online
OpenStudy (133):

Need help!!! Will become fan and give medal!!

OpenStudy (anonymous):

Question?

OpenStudy (133):

If y − 4 = 2x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? {(2, 1), (4, 2), (6, 3)} {(1, 2), (2, 4), (3, 6)} {(4, 0), (6, 1), (8, 2)} {(0, 4), (1, 6), (2, 8)}

OpenStudy (133):

@cutiepie15 @Data_LG2 @Squirrels

OpenStudy (anonymous):

For example let's try doing the 1st set {(2, 1), (4, 2), (6, 3)} ( 2 , 1) sub this into the equation: 1− 4 = 2(2) -3 = 4 are they equal ? no, so this set is not the right one (Choice A is eliminated) You can move on to the second choice : {(1, 2), (2, 4), (3, 6)} try substituting some points and tell if all the points satisfy the equation like I did above That's from yesterday.

OpenStudy (133):

Yep But the one you said was it was actually wrong on my quiz.

OpenStudy (anonymous):

Choice C {(4, 0), (6, 1), (8, 2)} let's check y − 4 = 2x } (4,0) 0-4 = 2(4) -4 = 8 -> not equal, so this is not the one

OpenStudy (133):

oh ok

OpenStudy (anonymous):

now you're left with B and C

OpenStudy (anonymous):

**D not C

OpenStudy (133):

its not b

OpenStudy (133):

ok I still son't get it.

OpenStudy (133):

@Data_LG2 ??? you there

OpenStudy (anonymous):

let's test it: {(1, 2), (2, 4), (3, 6)} }(1,2) y − 4 = 2x 2-4= 2(1) -2 = 2 are they equal?

OpenStudy (133):

no

OpenStudy (anonymous):

okay, so now can you do D and let's check if that one is right

OpenStudy (anonymous):

show me how you do it

OpenStudy (133):

@Data_LG2 0-4=4 2*4=8 4=8 no

OpenStudy (anonymous):

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