Inequality question?

Question

Indicate on an xy-plane those points (x, y) for which the statement

(-2 less than or equal to x less than or equal to 15) AND (15 <y < 20) holds.

Answer 1

Draw a solid line at x = -2 and x = 15.

Draw a dashed (or dotted) line at y = 15 and y = 20.

Shade in between.  Your region will look like a rectangle.