Write the equation of line a b ↔ in slope-intercept form, given the points a ( 0 , 4 ) and b ( − 4 , − 8 ) . in your final answer, include all of your calculations.

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?