#### Question

# Please help Me! I have been looking at this for an hour. Please help me! 10 points and possibly 20!?

3. What function is represented on this graph?

http://takeexam.next.ecollege.com/ec/pub…

(Points : 5)

f(x) = 2x^2 ? 1

f(x) = x^2 ? 1

f(x) = 2x^2 + 1

f(x) = x^2 + 1

4. A function is defined by the equation y = 9 ? x. Which equation defines the inverse of this function?

(Points : 5)

Option A: y= 1/x-9

Option B: y= 1/9-x

Option C: y = x - 9

Option D: y = 9 - x

#### Answers

3. link doesnt work

4. y=9-x

x=9-y

x-9=-y

-(x-9)=y

-x+9=y

y=9-x

#1

non of us can see the link

#2

3. i can't open ur website...

4. D

#3

Can't open the link for question 1 but question 2 is D. (Switch x and y and solve for y)

#4

Cannot access the link to the 1st question, link probably restricted.

2nd Question: solve for x

x + y = 9

x= 9-y

solution: the inverse is y=9-x.

You should pay attention during classes.

#5