Question

I have this question that i am stuck with for the past 20 mins so I was thinking someone could help me so the question is below.

Which of the following is NOT a solution of
y=5x - 10 ?

A. 5,20
B. 3,5
C. 4,10
D. 2.0

Answer 1

In D. i meant 2,0

Answer 2

plug in each of the values in the format (x,y) into the equation

Answer 3

ummm I am in 6th grade and I have no idea how to do that!

Answer 4

I typed what ASNinja typed but my message did not post. :(

Answer 5

But...

Answer 6

I don't know how to do that i only am in 6th grade even my parents don't know how to do this!

Answer 7

Okay so the first answer (A) is the points 5 and 20 correct?

Answer 8

correct

Answer 9

so each of the answer choices are in the format (x,y)
so plug in each value into the equation for A
20 = 5(5) -10
\[20 \neq 15\]

Answer 10

So in the equation, there is an x and a y. (5, 20) are the x and the y. 5 is the x and 20 is the y.

Answer 11

x always comes 1st right?

Answer 12

Yes

Answer 13

yes, (x, y)

Answer 14

Thank you

Answer 15

You're welcome

Answer 16

I still don't know how to get the answer

Answer 17

Which of the choices when plugged into the equation is false?

Answer 18

ASNinja will probably explain it better than me.

Answer 19

Err i dont know

Answer 20

But there is nothing that tells me what y or x is

Answer 21

We just plugged in A, and got that 20 = 15

Answer 22

Wait a minute I think I understand now

Answer 23

Is that a true statement?

Do you know what coordinates are?

Answer 24

The 1st number which is X i plug that in and the 2nd number is y so if i plug in X and solve it then Y is the answer.

Answer 25

Yup I got it thank you!

Answer 26

yes, but if we plug in the values for A, it doesn't work, so the correct answer is A

Answer 27

Yes i got the same answer right now!

Answer 28

Also i have a question

Answer 29

How do you graph an equation?

Answer 30

Not the one with slope

Answer 31

Give me an example

Answer 32

Ok

Answer 33

how do you graph y=x+3

Answer 34

That equation has a slope of 1
so,

Answer 35

But not the 1 with slope

Answer 36

the one i have to do is different

Answer 37

The equation you gave me has a slope of 1

Answer 38

y = 1x + 3

Answer 39

Khan's videos might be helpful. For example, see
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/graphing-slope-intercept/v/graphing-a-line-in-slope-intercept-form

on one way to plot lines.

Answer 40

Yeah. Take a look at KhanAcademy.org

Answer 41

here is another way
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/graphing_solutions2/v/plotting--x-y--relationships

Answer 42

Did you solve the problem?