Which table shows a proportional relationship between x and y?
1. x: 1 3 4 6
y: 5 12 18 30

2. x: 1 2 4 5
y: 3 6 12 15

3. x: 0 2 4 7
y: 4 8 12 18

4. x: 1 2 3 6
y: 4 10 12 26

I think it's the third one but can someone help me just to be sure?

Question

Which table shows a proportional relationship between x and y?
1. x: 1 3 4 6
    y: 5 12 18 30

2. x: 1 2 4 5
    y: 3 6 12 15

3. x: 0 2 4 7
    y: 4 8 12 18

4. x: 1 2 3 6
    y: 4 10 12 26


I think it's the third one but can someone help me just to be sure?

anonymous · Answer

WILL MEDAL!!

tylerd · Answer

if someonthing is proportional it looks like this

y=kx

tylerd · Answer

so see if you can come up with an equation in the form y=kx for one of those tables

anonymous · Answer

what does the k stand for?

tylerd · Answer

its some constant, could be any number

tylerd · Answer

try to see if you can solve for k, for #2

anonymous · Answer

I..... can't. I'm super sorry :(

anonymous · Answer

I'm not the best in math

tylerd · Answer

so lets look at the numbers for #2.

when x=1  y=3
when x=2 y=6
when x=4 y=12

so for y=kx we substitute the values for x and y in
3=k*1
6=k*2
12=k*4

tylerd · Answer

if k is the same value for each of those, then its proportional

anonymous · Answer

I think it is a proportional relationship

anonymous · Answer

Is it @TylerD ?