How do i show work for number 1 pls help

The solution of given inequality satisfies the ( -2,-2) , (4 ,0) and (-2,0)

Step-by-step explanation:

Given inequality

                      x - 3y < 5

a) From the graph we will choose point  x=-2 and y=-2

                    x - 3y < 5

                  -2 - 3(-2) < 5

                  -2 + 6 < 5

                    4 < 5

b)  From the graph we will choose point  x= 4 and y= 0

                x - 3y < 5

               4 - 0 < 5

                 4 < 5

c)  From the graph we will choose point  x= -2 and y= 0

                x - 3y < 5

               -2 - 0 < 5

                 -2 < 5

The solution of given inequality satisfies the ( -2,-2) , (4 ,0) and (-2,0)

it would be 6xy and -16xy.