PLEASE HELP
Which lines are perpendicular to 7x-3y=18
Choose all answers that are correct
A3x+7y=42
B3y=7x-15
C3x-7y=21
D-7y=3x+1
Which lines are perpendicular to 7x-3y=18
Choose all answers that are correct
A3x+7y=42
B3y=7x-15
C3x-7y=21
D-7y=3x+1