Question

If the points (-4, 1) and (2, 1) are the endpoints of a diameter of a circle, where is the center?

A)
(-7, 1)

B)
(-1, 1)

C)
(1, -1)

D)
(5, 1)

Answer 1

To find this we evaluate using the midpoint formula:

m=(
`(x_(1)+ x_(2) )/(2)`,
`( y_(1)+ y_(2) )/(2)`)
m=(
`(-4+2)/(2)`,
`(1+1)/(2)`)
m=(-1,1)
The answer is B) (-1,1)

Answer 2

Using the midpoint formula, you'd get B: -1,1
: D