Answer :
One way is the 4 is the Y- intercept so you could graph that and the 2 is the slope so you would go up 2 units right 1 unit up 2 units right 1 unit ect.
Another method would be to plug in 0 for X and get the Y intercept then plug in 0 for Y and find the X intercept. graph the points and connect
Another method would be to plug in 0 for X and get the Y intercept then plug in 0 for Y and find the X intercept. graph the points and connect