Seven runners are competing in a race where 3 of them will earn medals for finishing first, second, and third. How many unique ways are there to arrange 3 of the 7 runners in first, second, and third place

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