Question

Really need an explanation

Answer 1

y + 4x - 1 = 4x + 2

x= -2, -1, 0, 1, 2

y+4(-2) -1=4(-2)+2
y-8-1=-8+2
y-9=-6
y=3

y+4(-1)-1=4(-1)+2
y-4-1=-4+2
y-5=-2
y=3

y+4(0)-1=4(0)+2
y+0-1=0+2
y-1=2
y=3

y+4(1)-1=4(1)+2
y+4-1=4+2
y+3=6
y=3

y+4(2)-1=4(2)+2
y+8-1=8+2
y+7=10
y=3