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Is the relation given by the set of ordered pairs below a function? (Yes or No)

[tex] \{(3,-7),(2,4),(-3,-7),(3,0),(0,2)\} [/tex]

The solution is


Sagot :

To determine whether the given relation is a function, we need to check if each input (or [tex]\(x\)[/tex]-value) is associated with exactly one output (or [tex]\(y\)[/tex]-value). In other words, in a function, no [tex]\(x\)[/tex]-value should map to more than one [tex]\(y\)[/tex]-value.

The given set of ordered pairs is:
[tex]\[ (3,-7), (2,4), (-3,-7), (3,0), (0,2) \][/tex]

We will examine each [tex]\(x\)[/tex]-value in the pairs and see if any [tex]\(x\)[/tex]-value is repeated with a different [tex]\(y\)[/tex]-value.

1. The first pair is [tex]\((3, -7)\)[/tex].
2. The second pair is [tex]\((2, 4)\)[/tex].
3. The third pair is [tex]\((-3, -7)\)[/tex].
4. The fourth pair is [tex]\((3, 0)\)[/tex].

Here, we can see that the [tex]\(x\)[/tex]-value [tex]\(3\)[/tex] appears again. However, it is associated with a different [tex]\(y\)[/tex]-value:

- In the first pair: [tex]\( (3, -7) \)[/tex]
- In the fourth pair: [tex]\( (3, 0) \)[/tex]

Since the [tex]\(x\)[/tex]-value [tex]\(3\)[/tex] is paired with two different [tex]\(y\)[/tex]-values ([tex]\(-7\)[/tex] and [tex]\(0\)[/tex]), this indicates that one input maps to multiple outputs.

Therefore, the relation given by the set of ordered pairs is not a function.

The answer is:
[tex]\[ \text{IN} \][/tex]