How would I do this for the origin in a graph? Theres an attachment

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

State one method by which you can recognize a perfect square trinomial.

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?