There are 5 people in the Brass Ensemble, and
each person plays a different instrument. All of the
musicians want to play a piece with someone who
plays a different instrument. The instruments are
Trombone, Cornet, Sousaphone, French Horn
and Tuba, Which list contains all the instrument
combinations?

∞ this is your sign

all it means is function 3

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.