How do i graph the inequality x+4y< 8

first i got the y value by itself. so i end up with y< -x+2. i am graphing that equation but i can't seem to get this right.

The water company charges a residential customer $41 for the first 3,000 gallons of water used and $1 for every 200 gallons used over 3000 gallons. if the water bill was $58 how many gallons of water were usedanswersa 3400 gallonsb 6000 gallonsc 6400 gallons d 7000 gallons