Question

So, I was taking a math est and it gave me a confusing question, and I spent a half hour trying to solve it, but I still don't understand. I will post the question in the comments.

Answer 1

k

Answer 2

:)

Answer 3

Please no direct answers

Answer 4

you got it right already

Answer 5

they should state which shows a proportional relationship as shown in the graph

Answer 6

because any 2 given points are a proportional relationship already

Answer 7

I dont understand what you mean.

Answer 8

@518nad

Answer 9

okay which part

Answer 10

Your last two comments

Answer 11

okay i think i get what ur question is looking for

Answer 12

so they want you to identify points in the form
y=mx, this is a strictly proportional relationship
y=mx+b is a proportion and shift

Answer 13

the 2 lines given to you on the graph, are in y=mx form because they pass through zero
so b=0
y=mx+0 = mx

the points you selected from the first choice are points on the graph

Answer 14

(3,6) (5,10)

Answer 15

I am sorry. I probably sound dumb. I dont even know what it is asking for (I skipped 7th grade)

Answer 16

its okay, you knw the equation of a line is y=mx+b

Answer 17

m is the slope and b is the y intercept

Answer 18

Still dont have a clue what you are saying. :(

Answer 19

the equation of a line is
Y=mx+b

Answer 20

ok

Answer 21

um okay lets start with
y=mx

Answer 22

are you away of how to use the axis

Answer 23

are you aware*

Answer 24

yes

Answer 25

okay so a line equation is this expression that tells you how to draw a line on an axis

Answer 26

for example if u have the line equation
y=2x

Answer 27

you can plug in a value for x and it will tell you what y is, and this will give u a point
(x,y) to graph

Answer 28

So if you had the equasion y=2x, and x = 4, then 7 would be 8?

Answer 29

yes y would be 8 then

Answer 30

this is what we call a proportional relationship,
when its in the form
y=mx, where m is some number

Answer 31

for the set of 2 points you picked in the first choice

Answer 32

both of those 2 points satisfy a proportional relationship

Answer 33

3,6
x,2x

5,10
x,2x

so y=2x here

Answer 34

Ok

Answer 35

for the other set of points, they do not satisfy, because they have different proportions they are not on the same proportion line

Answer 36

for example
5,10
x,2x

y=2x

12,6
x,x/2
y=1/2 * x

these are 2 differnt proportion equation one is y=2x, another is y=1/2 * x

Answer 37

So what you are saying is that we have to solve
3,6
x, 2x
5,10
x, 2x
correct?

Answer 38

ya im showing u the relationship

Answer 39

Oh ok

Answer 40

3,6
3,2*3

5,10
5,2*5

the y value is the x being multipled by 2

Answer 41

So for
3,6
x, 2x
x would be equal to 3, right?

Answer 42

yes

Answer 43

So y is 6?

Answer 44

yes

Answer 45

i took 3,6 and said its in the form x,2x since its 2 times the x value

Answer 46

So it would be x, 2x = 3,6

Answer 47

yes umm

Answer 48

are you confused with the point notation

Answer 49

No, you have helped me understand it alot! Thanks! Sorry for needing such a long explanation.

Answer 50

no problem!

Answer 51

as long as u get it

Answer 52

if both of your points given satisfy the same y=mx equation for some m

Answer 53

then both of the points are on the same proportion line

Answer 54

in this case the first set of points both satisfy the euation
y=2x
all the other set of points given satisfy different y=mx lines

Answer 55

Thanks! I understand it now.

Answer 56

Thanks sooooooooo much!

Answer 57

okay good lol :)

Answer 58

☺☻☺☻

Answer 59

☺☻