Identifying proportional relationships

Now Playing:Identify proportional relationships – Example 1a
Ejemplos
  1. Is the relationship between the two variables proportional?
    1. x

      y

      -1

      -4

      1

      4

      2

      8

      3

      12

    2. g

      h

      0

      1

      2

      2

      4

      3

      6

      4

    3. r

      t

      -6

      -2

      -3

      -1

      9

      3

      14

      4