The school janitor is going to purchase a vacuum cleaner to use in the classrooms. the regular price of a vacuum cleaner is $70. the janitor can buy a used one for $28. how much money will he save if he buys the used vacuum cleaner?  

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