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