Question

If y = 6x − 3, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, 3), (1, −9), (2, −15)}
{(0, −3), (2, 15), (4, 21)}
{(0, −3), (2, 9), (4, 21)}
{(0, 3), (−2, 15), (4, 21)}

Answer 1

Hi there!
Welcome to OpenStudy :)
Let's try The first choice, we are going to plug in the x and y values into the given equation

Answer 2

3=6(0)-3
-9 = 6(1) − 3
-15= 6(2) − 3

Can you tell me if these ordered pairs make the equation true? (these are from choice A)

Answer 3

?

Answer 4

3=6(0)-3
Is this true?

6*0-3=3?

Answer 5

it would be -3

Answer 6

Good so we know that A. is not the answer

Answer 7

Let's try B
{(0, −3), (2, 15), (4, 21)}

-3=6(0)-3
15=6(2)-3
21=6(4)-3

Are these true?

Answer 8

the second one isnt

Answer 9

Good so we know B is not our answer, lets try C
{(0, −3), (2, 9), (4, 21)}
We already know the (0,-3) and (4,21) are right so we only need to try (2,9)
9=6(2)-3
is this true?

Answer 10

idk

Answer 11

Does 6*2-3=9?

Answer 12

._.

Answer 13

?

Answer 14

yes

Answer 15

Good so which of the choices is out answer?

Answer 16

c?

Answer 17

Yep well done :)

Answer 18

cool thank you and you changed your picture

Answer 19

Yep and wanted a new look :P ^_^

Answer 20

thx