Please help. brainliest (10 points was the max) write an equation gives two sets of points.

1. (4,5), (2,1)
2. (3,-2), (-3,-8)
3. (-1,7) (1,5)
4. (-2,-1), (0,3)
5. (3,4), (5,-4)
6. (-3,6), (-5,2)
7. (6,10), (3,-5)
8. (3,-3), (7,5)

If i drew it correctly, then al would also equal 14 in., because the midsegment divides the line ab into 2, equal in length lines.therefore, al = lb 

1. use commutative property to reorder the terms.2x+81=0.2. move the constant to right side by adding its opposite on both sides. 2x+81-81=0-81.2x=(-81).3. divide the equation on both sides.2x ÷ 2 = 81 ÷ 2.x = -81/2. your answer is -81/2. if you need to simplify it into a decimal, it’s -40.5.