Algebra - Function

Tools: pointer cross off highlighter pencil eraser

DIRECTIONS: Select all that apply.

Which of the following are functions?

{ (-2,3), (4,5), (7,-2), (-2,6) }

x = 5

{ 1, 2, 3, 4, 5 }

{ (3,4), (5,4) }

y = x + 4

{ (2,3), (4,5), (7,-2) }

Severity: Warning

Message: touch(): Unable to create file sessions/ci_session56311f94ad1d0e9ed1910468e126990adc8e207a because No such file or directory

Filename: drivers/Session_files_driver.php

Line Number: 252

Backtrace:

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: sessions)

Filename: Unknown

Line Number: 0

Backtrace: