Geometry.. i’m confused about this question?

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Need solving this second acceleration problem.

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)