Question

I need help with this question.

Answer 1

Im pretty sure it’s a

Answer 2

System A: C)infinite answers

System B: B)special answer (x,y)=(3,1)

Explanation:

System A:

if we find sum of same variables, we get 5x-5x-y+y=-2+2, it means 0=0 so, this system has infinite answers.

System B:

same thing applied here,

x-x+4y+4y=7+1

8y=8

y=1

so,

x+4*1=x+4=7

x=3