find the perimeter of ABC with verticles A(-1,2) B(3,-2) and C(-1,-2). round answer to nearest hundredth

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Does y+x=1 show direct variation. yes or no.

What does the pair of equations y = 1, z = 8 represent? in other words, describe the set of points (x, y, z) such that y = 1 and z = 8?