Question

=

Answer 1

a line passing through origin has the form
y=mx

Answer 2

ere, x= 1/2 is given
so whats the equation of line?

Answer 3

y=m1/2

Answer 4

sorry, slope = m = 1/2

Answer 5

oh okay!

s=1/2x

Answer 6

y =x/2
or
x =2y
right ?

Answer 7

yup

Answer 8

so if y=1
what does x= ?

Answer 9

2! 2*1=2
x=2

Answer 10

Thanks!

Answer 11

So then it would be (2,1)?

Answer 12

yes. so 2,1
welcome ^_^

Answer 13

If you have an extra second, do you think you could help me with another one?

Answer 14

sure

Answer 15

I have no idea what to do on this problem :(

Answer 16

yes, thats a function defined as 2x
where x is a independent variable
to find D(6), plug in x=6 in 2x
what u get ?

Answer 17

12?

Answer 18

yes, so its not 3
so the 3rd one is false

Answer 19

Oh I get it!! :D

Answer 20

So for D(x) is a direct variant, it would not be true because D(x) only goes with the value of x, and not anything else?

Answer 21

direct variation means of the form
y= kx
so, here D(x) is indeed direct varation

Answer 22

Oh okay! I get so confused with all the math terms, but you make it so simple!

Answer 23

And for the last one, if we plug in the x, it'll equal the y, and we see if its a function?

Answer 24

I think it may be true! :D

Answer 25

you plug in x=5, see if you get D(5) =10
do this for all points.
and yes , that would be true :)

Answer 26

2*5=10
2*-2=-4
2*6=12

Answer 27

So in summary, the first one is true, second is true, third is false, fourth is true, and the last one is true?

Answer 28

Or to simplify, all are true except for the third one?

Answer 29

-2*2 is indeed -4
so, all true

Answer 30

Wait, the D(6) one is true? i thought that 6*2\[6*2\neq3\]

Answer 31

Or wait, maybe its saying 2*3=6?

Answer 32

i mean true for all 3 points, which makes last statement true

Answer 33

oh okay lol

Answer 34

3rd one is surely false

Answer 35

all other are true

Answer 36

you too :)
and welcome ^_^