Question

How do you graph `y>=-1` and `x>=3`?

Answer 1

They are both lines on the coordinate plane. Their intersection is the area common to both of them.

Explanation:

Because they both include the variable, the drawn lines will be solid.
`y >= -1` is a line at `y = -1` and the area shaded to the top.

`x >= 3` is a line at `x = 3` and the area shaded to the right.

The intersection is the lines from the point (3,-1) up and to the right, and the area shaded between them.