Answer :
neverminding for a second that AB is a midsegment of anyone.
we know the slope of XZ, and we know AB is parallel to XZ, well, parallel lines have the same slope.
we know the slope of XZ, and we know AB is parallel to XZ, well, parallel lines have the same slope.
The correct answer is 4.
Since AB is a midsegment parallel to XZ, its slope and the slope of XZ are the same.
Since AB is a midsegment parallel to XZ, its slope and the slope of XZ are the same.