:) 1. which ordered pairs in the form (x, y) are solutions to the equation 3x−4y=21 ? select each correct answer. a (11, 3) b (−3, 3) c (7, 0) d (−1, −6) 2. which statement about the ordered pairs (−9, 3) and (2, −4) is true for the equation 6x−y2=14 ? a neither ordered pair is a solution. b both ordered pairs are solutions. c (2, −4) is a solution to the equation. d (−9, 3) is a solution to the equation. 4. what is the x-intercept of the line with this equation 13x+y=−15 ? enter your answer in the box. ( , 0)