Question

If y = 9x − 7, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, −7), (1, 2), (−1, −16)}
{(−7, 0), (2, 1), (−16, −1)}
{(1, 9), (2, 7), (3, 16)}
{(7, 9), (8, 10), (9, 11)}

Answer 1

?

Answer 2

could you explain how to find the answer? my brain's gone wacko lol

Answer 3

I think you have to substitute you multiple choice in to your equation...

Answer 4

how do you do that?

Answer 5

^ That would probably be the best way to solve. Substitute in the values for x and y, whichever set works for all 3 would be the correct answer

Answer 6

what the_ocean_girl said

Answer 7

hmm... so that goes back to what i said before, how do I do that? where do I plug the numbers in?

Answer 8

Let's do the first one together! :) Okay so x would be the input and y is the output. So for A, (0, -7), we would plug 0 in for x and -7 in for y, if this statement turns out to be true, we can move on and check the next group in A. If all 3 groups of numbers fit, we have the right answer. Are you understanding what I'm saying?

Answer 9

ohh ok thanks!!! so ill figure this out and ill run it by you later :)

Answer 10

No problem! Take your time and let me know what you come up with! :)

Answer 11

ok thanks!!! thanks @Lovelarap

Answer 12

@the_ocean_girl

Answer 13

i havent been able to find an answer ugh and ive tried and tried

Answer 14

think it's a

Answer 15

why? can you explain please??

Answer 16

ok,
{(0, −7), (1, 2), (−1, −16)} substitue to y=9x-7
-7=9(0)-7
2=9(1)-7
-16=9(-1)-7

Answer 17

so then would A be right?

Answer 18

yep

Answer 19

yaya!!!! thanks lol :D :D :D

Answer 20

your welcome