Question

Which ordered pair is a solution of the equation y=-11x+4? **WILL MEDAL**

Answer 1

a. (0,-7)
b. (-1,-7)
c. (1,-7)
d. (2,26)

Answer 2

Try plugging in each answer choice until you find one that works

Answer 3

@StudyGurl14 that's where I need help I don't understand how

Answer 4

Remembered an ordered pair is (x,y)
You have y = -11x + 4

Plug in

For example, using answer choice A
(0,-7)
(-7) = -11(0) + 4
-7 \(\neq\) 4

So a is out

Answer 5

I'm sorry I still don't understand how to do it @StudyGurl14

Answer 6

Notice answer choice A is (0,-7) right?

Answer 7

Yeah

Answer 8

Since ordered pairs are (x,y), this means that answer choice A has x = 0, and y = -7

Answer 9

They give you the equation of the line
y = -11x + 4

Answer 10

For an ordered pair to be a solution, it MUST result in a true equation when plugged in

Answer 11

So using answer choice A, x = 0, y = -7
y = -11x + 4

Notice the equation has x and y. Plug in the known vallues
(-7) = -11(0) + 4
-7 = 0 + 4
-7\(\neq\)4

Since -7 does not equal 4, you know that (0,-7) is not a point on the line

Answer 12

so...b would be
(-7)=-11(-1)+4
-7=-1+4

Answer 13

or am I mixing up the numbers @StudyGurl14

Answer 14

no, perfect

Answer 15

except -11(-1) isn't -1

Answer 16

ummm would it be 0 like the first equation?

Answer 17

@StudyGurl14

Answer 18

No. -11 times -1 = 11

Answer 19

So would it be a positive 1

Answer 20

@StudyGurl14

Answer 21

@StudyGurl14 If you're too busy do you know someone who can help so I can get out of your way (I know it sucks I don't understand I'm sorry.)

Answer 22

It would be positive 11

Answer 23

I'm so sorry! I help so many people at once that I need tags to remind me. Really, feel free to tag me with every post so I am reminded to come back

Answer 24

so...
(-7)=-11(11)+4
-7=-1+4

why in the first equation is it 0 though?

Answer 25

No, it is
(-7) = -11(-1) + 4
-7 = 11 + 4

Answer 26

Oh

Answer 27

so that's wrong too because 15 does not equal 4

Answer 28

exactly! See, you're getting it

Answer 29

Well, actually 15 does not equal -7, but yeah

Answer 30

-7 \(\neq\) 15

Answer 31

Now let's do C (1, -7)

Answer 32

so c would be...
(-7) = -11(1) + 4
-7 = -11 + 4

Answer 33

-11+4=-7

Answer 34

Yep

Answer 35

good job

Answer 36

So....does C work?

Answer 37

Yes..? I think

Answer 38

yes!

Answer 39

yay thank you so much!

Answer 40

anytime :)