The midpoint has coordinates that are the average of the x's and the average of the y's.
The average of the x-coordinates is (8+4)/2 = 6.
The average of the y-coordinates is (0+-7)/2 = -3.5.
The midpoint is (6,-3.5)
Hope the solution helped. Sometimes you need more than a solution. Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)