What is the slope of this line? 3/4 -3 -3/4 4

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.