Answer: you put in different numbers for x, and then solve for y, or put in different numbers for y and then solve for x. Then you graph the x and y you get as a cordinate (the one you put in an the one you got)
Step-by-step explanation:
for example:
if x = 0
y= -0/3 + 4
y = 4 (since -0/3 is 0, you cancel it out)
so, in the boxes you would put 0 for x and 4 for y. You continue untill you fill them out.
