Question

look at this table:

x	y
-5	16
-1	-20
8	16
9	3

is this relation a function?
yes no

Explanation:

Step1: Recall function definition

A relation is a function if each input (x - value) has exactly one output (y - value).

Step2: Check each x - value

• For \(x = 20\), \(y=0\) (one output).
• For \(x=- 5\), \(y = 16\) (one output).
• For \(x=-1\), \(y=-20\) (one output).
• For \(x = 8\), \(y = 16\) (one output).
• For \(x=9\), \(y = 3\) (one output).

Each \(x\) - value has only one corresponding \(y\) - value.

Answer:

yes