Is the function linear? If not why? What is the constant rate of change, and write the equation of the line.

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

Which point is a solution to y s 4x + 5?

What is the value of x in the following equation? -3x-2=2x+8