Question

Please help me with this math problem.

Answer 1

b = 2

Explanation:

Using the midpoint formula

(2, 1) = [
`(1)/(2)`(- 4 + 8),
`(1)/(2)`(b + 0) ]

considering the y-coordinate, then

`(1)/(2)` b = 1 ( multiply both sides by 2 )

⇒ b = 2