1. triangle ABC with vertices A(-3, 4), B(1, 4),
and C(3, 1)
YO A
NIC
-6-7-012

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb