The answer is B. 2x-y=0, because parallel lines have the same slope (2x), and when you substitute 0 for Y, you get 0 for X-- the origin, (0,0)
Here's an example.
Sally was buying two mangos at the grocery store. She brought a coupon that day and god 10 dollars off the mangos, <em>k,</em> price. The cashier told her to pay $6. How much did each mango cost?
A) 5x^3 +2x - 1
Good luck.
