5. which statement is not true?
if x = 1, then x2 = 1.
if x2 = 1, then x = 1.
if x= -1, then x2 = 1.
x2 = 1 if and only if x = 1 or x = -1.

is NOT true.

Step-by-step explanation:

1.

......True

( 1 )² = 1

2.

If ........ NOT True

∴ x =± 1     .........this is correct

3.

......True

( -1 )² = 1

4.

x2 = 1 if and only if x = 1 or x = -1. .........True

( 1 )²  = 1

( -1 )² = 1

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)