BRAINLIEST PLS HELP

Solve for x:

x = 10
x = 30
x = 0
x = 1

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Could someone with number 1 and 2

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