Jason is comparing the sizes of Earth and Saturn. The radius of Earth is approximately 6,378,100 meters. What is the radius of Earth, in meters, written as a single-digit number multiplied by a power of 10?

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

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.