Determine which relationship represents a function and which relationship does not represent a function. If there is not enough information, select that response.

Question

Chart 1:
X side in order: 4, 1, 4, 16, 10, -19
Y side in order: -20, -17, 14, 5, 0, -16

Chart 2:
X side in order: -15, -11, -14, -9, -1, -5
Y side in order: 18, 18, 18, 18, 18, 18

Answer Choices: function, not a function, not enough information

Answer 1

Chart 1:
The relationship between the values on the X side and the values on the Y side is:
(4, -20)
(1, -17)
(4, 14)
(16, 5)
(10, 0)
(-19, -16)

This relationship does not represent a function because the X value of 4 is associated with both -20 and 14.

Chart 2:
The relationship between the values on the X side and the values on the Y side is:
(-15, 18)
(-11, 18)
(-14, 18)
(-9, 18)
(-1, 18)
(-5, 18)

This relationship represents a function because each X value is associated with only one Y value, which is 18.

Answer:
Chart 1: not a function
Chart 2: function