Which of the following would eliminate the variable on the left side of the given equation? 38 - 15w = 25w + 4

Bring the coefficients to the same side. It doesn't matter which coefficient you choose, but since you asked to remove it from the left, I will bring the -15w to the right. This will also allow you to avoid dealing with negatives.

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1