What is the position of 7 in the number 876,543?

a. the ten-thousands place
b. the thousands place
c. the tens place
d. the hundreds place

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.