Given the function :

We will find the correct option using the intercepts
X - intercept is the value of x when y = 0
So, when y = 0

Y - intercept is the value of y when x = 0
So, when x = 0

So, the graph if the line must pass through the points :
( 6 , 0 ) and ( 0 , -3 )
We will check the graphs to find the correct option
So, the last graph
Which is as the following :