Answer:
First find the points that line goes across on line x and line y and tie them together.
Explanation:
First we need to find the points that the line across to x and y lines.
for x line we need to put 0 instead of y:

for y line we need to put 0 instead of x:

And the line will be goes over (5/2,0) and (0,5/3) points.
Please check the graph at the attachment.