Please hellp please

Which point is a solution to y s 4x + 5?

X+ y = 5 ; x - y =3 solve using linear combination

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders