Question

Which ordered pair is not a solution of y= 4x- 9?

A. (-9, 27)
B. (3, -21)
C. (-6, 15)
D. (5, -28)

Answer 1

this is on a graph?

Answer 2

no, there isnt a graph for this question

Answer 3

ok thnx

Answer 4

i think its A but not sure

Answer 5

okay :)

Answer 6

wait for texas to reply

Answer 7

okay

Answer 8

just sub in your answer choices and see which one is incorrect. I will do the first one for you..
y = 4x - 9
(-9,27)....x = -9 and y = 27
lets sub
27 = 4(-9) - 9
27 = -36 - 9
27 = - 45 --- not equal...oops...maybe I shouldn't have picked the first answer choice....thats the answer

Answer 9

I was just trying to show you how to do it.....do you understand how I got the answer ?

Answer 10

Are you sure the question is not
\(y= \color{red}{-}4x- 9\)

Answer 11

thanks :)

Answer 12

I know know you got the answer

Answer 13

*how you got the answer*

Answer 14

mathmate..
I understand that the equation is not y = -4x - 9.....the -4 is not negative...but when you sub in -9 for x, it makes a negative 36.....and - 9 + (-36) does not equal 27

Answer 15

@love51342
Can you check if the question is not
\(y= \color{red}{-}4x- 9\)

Answer 16

@texaschic101
You're working with answer A. But that's not the only choice!

Answer 17

I see that now.....my bad...if the question asks for " not correct ". then there is more then 1 answer

Answer 18

or if the equation is wrong....makes a big difference

Answer 19

@texaschic101 Not really, the question asked which ordered pair (in singular), so there is a problem with the question.

Answer 20

good catch mathmate

Answer 21

Hope @love51342 comes back!
Thank you!