Line m lies in the xy-plane. The y-intercept of line m is -1, and line m passes through the midpoint of the line segment whose endpoints are (2, 4) and (6, -8). What is the slope of line m ?	Choose the correct choice from the following
A) -3
B) -1
C) -1/3
D) 0
E) Undefined
Ans: E   Solution: line m goes through midpoint of (2, 4) and (6, -8). midpoint is (4,-2)   as we can see that the y axis of intercept point is (0,-1) means line m is parallel to x axis   slope M= 0   Ans: Undefined
<result>E</result>
Line m lies in the xy-plane. The y-intercept of line m is -1, and line m passes through the midpoint of the line segment whose endpoints are (2, 4) and (6, -8). What is the slope of line m ?