If abc - def, what is the scale factor of abc to def? sorry this is my 4th or 5th post on math xd

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Can someone me out here number 4 plz