Do you have to prove a postulate before you can use it as a reason in a proof? Explain why or why not.

A postulate is an obvious geometric truth that is accepted without proof. Postulates are assumptions that do not have counterexamples. Postulates themselves cannot be proven, but since they are usually self-evident, their acceptance is not a problem.

Step-by-step explanation:

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half