Sweet t purchased a new pair of jeans to wear to the battle of the bands on sale for 40% off. he saved $20. what was the regular price of the jeans?

50$ because 20$ is 40%, so times that by 2 which you get 20$ and 80%. Then you divide 20 by 2 then you get 10 which is 20% so you add 10 and you get 50$ which is 100%

Line ab is y = -7/5x + 56/5i don't understand  where point d comes into this.