Could someone me to find (m) & what equation represents the linear function, you.

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

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Is the power produced directly proportional to the wind speed, give reasons for your answer?