For each of the following relations, draw the graph of R and its inverse using the same coordinate axes.

For each of the following relations, draw the graph of R and its inverse using the same coordinate axes.

a .  R = { (x, y) : x + y ≤ 1}               b.  R = { (x, y) : y ≥ x + 1 and y < −3x}

c . R = { (x, y) : x 2 + y 2 = 16}       d.  R = { (x, y) : x 2 + y 2 > 16}