Question

помогите с 1 номером

Answer 1

а 
x-y=1
y=x-1
б
2y+x-4=0
y=-1/2*x+2

Answer 2

a) x-y=1  y=x-1  y=x+(-1)
b)2y+x-4=0  2y=-x+4  y=-1/2x+2   (-1/2)x+2
y=kx+b