Out of the 32 students in Mr. Martin’s class, 18 are boys. If this ratio is proportional to the ratio of students in the school and the number of boys in the school, which of the following proportions could could be used to find the number of students in the school? It is given that there are 468 boys in the school.

table 1

step-by-step explanation:

1-16

2-32

4-64

8-128

all multiples of 16

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.