$\"\"$

The function is $\"\"$ .

Graph the area of region:

$\"\"$

Observe the graph:

The graph of the function is in the shape of triangle.

Triangle has the base $\"\"$ and height $\"\"$ .

The area of the triangle is $\"\"$ .

$\"\"$ = Area of the triangle.

Area of the triangle is,

$\"\"$

The area of the region is $\"\"$ square units.