Line m lies in the xy-plane. The y-intercept of line m is -5, 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:
A) -3 B) -1 C) -1/3 D) 0 E) Undefined
Ans: A   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,-5) means line m is parallel to x axis   slope M= -3   -3ns: -3
<result>A</result>
Line m lies in the xy-plane. The y-intercept of line m is -5, 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 ?