Multiply and remove all perfect square roots. Assume y is positive. √12

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?

Ineed to find the answer to number 2

What is the solution to the system of equations? y=1.5-3 y=-x