Vertices angles to name two buildings

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)}

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Which of the following best describes the figure?