What are the two solutions to this graph?

Is the orthocenter of a triangle on the inside ?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work