Answer: YES.
<span>Drawing a vertical line will cross the graph at one point only.
</span>
<span>Every x was assigned one y.</span>
Answer:
and 
Step-by-step explanation:
The question is incomplete as the attachment to solve segment DE is missing. However, see attached for complete question.
Given

Required
Find x
Length of DE
To find x, we need to first simplify the given equation

Multiply both sides by 



Subtract 15 from both sides


Divide both sides by 10



From the attached;

Substitute 6.6 for x



Hence
and 
The first two are true and the last one is false
ANY number raised to the zero power is ' 1 '.
(This rule is worth memorizing. You'll amaze all of
your friends, especially the ones who don't know
how to do it without running to Google.)
So 5^0 = 1 .