Find an equation of the tangent line to the graph of f at the given point , use a graphing utility to graph the function and it’s tangent line at the point , and use derivative feature of a graphing utility to confirm your results . PLS HELP !

What happens when two galaxies approach each other? a. they form a black hole. b. they merge because of the strong gravitational pull they exert on each other. c. they shred each other into smaller galaxies. d. they form a supernova. e. they repel each other away because of their strong gravitational pull.