What is qr ? { will mark as brainlist}

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)}

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)