It is 240 miles from boston to new york.

if i drive at a speed of 50 mph, how long would it take me to reach new york?

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.