plz help me ( reward: brainliest) plz and ill give a five star rating and a thanks and if you want you could be my friend.

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.

Sam walks to school. her brother shawn leaves home a little later and rides his bike. they arrive at the same time. how fas is their home from school