John drove to visit his grandmother to get there he drove 157.5 miles on the highway and a few miles further on city streets to the highway part of his driveway of his drive took him 2.5 hours if John drove at a steady Pace how fast did he drive on the highway

Aline passes through the points (5,4) and (2.1). part a.) what is the slope of the line that passes through these points? show work. part b.) what is the equation of the line that passes through these points. show work. part c.) where does the line intercept on the x& y axis? show work