Sue was mixing the dry ingredients in a bowl for a cake. the original recipe called for 4 pounds of flour and 2 pounds of sugar .she needs to cut the recipe in half .how many pounds of dry ingredients does she need?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3