Function or not?

A. {(v,j),(v,v),(v,y),(v,k)}

B. {(-7,w),(8,h),(-4,e),(0,d)}

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 hours ago

To determine if a set of ordered pairs defines a function, we need to check if each input (the first element of each ordered pair) is associated with exactly one output (the second element of the ordered pair).

Let's analyze each set:

A. {(v,j),(v,v),(v,y),(v,k)}

In this set, the input "v" appears in multiple ordered pairs:

  • (v, j)
  • (v, v)
  • (v, y)
  • (v, k)

Since "v" is associated with four different outputs (j, v, y, and k), this set does not define a function.

Conclusion for A: Not a function.

B. {(-7,w),(8,h),(-4,e),(0,d)}

In this set, all the inputs are distinct:

  • -7
  • 8
  • -4
  • 0

Each input is associated with exactly one output:

  • -7 -> w
  • 8 -> h
  • -4 -> e
  • 0 -> d

Since no input value is repeated, this set defines a function.

Conclusion for B: Is a function.

To summarize:

  • A: Not a function
  • B: Is a function