What decimal is equivalent to 4 8/9?

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Need on this geometry question. explain how you did it.