Question

Use the midpoint formula to find the midpoint between H(3, 9) and J(9, -2).

a. (14, 11)
b. (4, 5.5)
c. (7, 3.5)
d. (6, 3.5)

Answer 1

Hello!

The midpoint formula is basically an average of x and y.

It is also written as:
`(\frac{x_(1)+x_(2)} {2},\frac{y_(1)+ y_(2)} {2})`.

With the formula above, we can substitute the given points into the equation, and simplify.

`((3 +9)/(2), (9+(-2))/(2)) = ((12)/(2), (7)/(2)) = (6, 3.5)`

Therefore, the midpoint between points H and J is choice D, (6, 3.5).