What is an infinite two dimension figure

A line has length, but no width or thickness, so it is one-dimensional. plane. An undefined term thought of as a flat, surface that extends infinitely along its edges. A plane has length and width but no thickness, so it is two-dimensional.

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