Question

y=2x-4 True or False?
Please help.

Answer 1

There has to be more to this

Answer 2

There isnt enough information

Answer 3

On a coordinate plane.

Answer 4

Is it asking if it's linear or nonlinear?

Answer 5

http://aplus.yumaed.org/R85Content/media/pictures/alg11_nbg/axisy2x4.gif

Answer 6

That's what it looks like.

Answer 7

oh you're finding the equation given the graph?

Answer 8

Yes.

Answer 9

then that equation will graph what you see, so it's true

Answer 10

Thank you.

Answer 11

yw

Answer 12

Wanna help me with another one?

Answer 13

sure

Answer 14

Kay, hold on.

Answer 15

Is (2,2) a solution to x=y
http://aplus.yumaed.org/R85Content/media/pictures/alg11_nbg/axis2611.gif

Answer 16

replace x with 2 and y with 2

Answer 17

do you get a true equation?

Answer 18

Yes?

Answer 19

x = y

2 = 2... true

Answer 20

so (2,2) is indeed a solution

Answer 21

Thank you. :).. Again. I'll probably put more questions like this so if you want to continue to help me then that would be awesome.

Answer 22

alright, I'd love to

Answer 23

Is (1,2) a solution to y=2x?

Answer 24

I'll put the graph in a sec.

Answer 25

Same thing, replace x with 1 and y with 2

y = 2x

2 = 2*1 <<--- is this a true equation?

Answer 26

Yes!

Answer 27

then it's a solution

Answer 28

So the graph doesn't matter?

Answer 29

what graph?

Answer 30

Nevermind. :)

Answer 31

if you can show that (1,2) lies on the line y = 2x, then that's visual confirmation

Answer 32

alright