Is it a function?
The question
x024710y315079
(0, 31) (24, 50) (7, 7) (10, 9)
Is this a function?
x: 0, 24, 7, 10 y: 31, 50, 7, 9
How it works.
x024710y315079
x024710y315079inputs024710
x024710y315079inputs024710
inputs 0, 24, 7, 10 — no repeat
A function
- 01
In a function, every input has exactly one output. So check the inputs — the top row of the table.
- 02
The inputs are 0, 24, 7, 10.
- 03
Now the check: every input appears once, so no input can go to two places.
- 04
Every input has exactly one output, so this relation is a function.