Question

What is the graph of the inequality in the coordinate plane x ≥ 3?

Answer 1

See below.

Explanation:

`x>=3`

First consider `x=3`

This is the vertical line through the point (3, 0) and all other values of `y in RR`

Hence, `x>=3` is the area consisting of this vertical line and points `(x,y): x>3 forall y in RR`

This area is shown graphically by the shaded area below extended to `+oo` for `x` and `(-oo, +oo)` for `y`

graph{x>=3 [-4.45, 8.04, -2.97, 3.275]}