Question

I need help finding the values for x if f(x)=3. http://oi41.tinypic.com/2gvsg8j.jpg

Answer 1

One value of x; look at the graph and you will see there is only one value of x where y = 3.

Answer 2

That value occurs when x = -7.

Answer 3

How do you find that?

Answer 4

Look at the graph. Look at the line y = 3...thats the horizontal line 3 units across, that is 3 units above the x-axis. y = 3 is a line parallel to the x-axis and 3 units above it.

Answer 5

So it would be the point (-7,3)

Answer 6

The question asked for how many values of x does f(x) = -3? Answer is one value of x.

Answer 7

If the question asks to find the value(s) of x, then answer x = -3.

Answer 8

See the example it gives me makes no sense to me. The part where it says i. http://oi44.tinypic.com/2lb0zr4.jpg

Answer 9

Ok..I have that entire sheet in front of me. Which question and part bothers you. I will help you and do whatever it takes to make sure this is crystal clear.

Answer 10

well?

Answer 11

The part at i

Answer 12

I am not understanding how the example is getting 3 for y=2.

Answer 13

For how many values of x is f(x) = 2? I see 3 points. Agree?

Answer 14

I only see 2.

Answer 15

(-11,3) and (2,2)

Answer 16

Two points are in quadrant 2, and one point (2,2). Thats 3 points in total.

Answer 17

What is the other point in quad 2?

Answer 18

f(x) = 2 is y = 2...Draw the entire line y = 2. Doesnt it intersect the curve in 3 places?

Answer 19

Can you draw y = 2?

Answer 20

It is a horizontal line 2 units above the x-axis

Answer 21

I understand that.

Answer 22

Draw that entire line...so that line lies in quadrants 1 and 2.

Answer 23

Do you see that the curve and line y = 2 intersects at 3 places?

Answer 24

Yes. That line intersects the curve in 3 places. Agree?

Answer 25

yes

Answer 26

It intersects the curve in quadrant I at (2,2) and intersects the curve at 2 more places in quadrant 2.

Answer 27

Agree??????

Answer 28

And so for y=3 it only intersects at (-7,3)?

Answer 29

Who is talking about when y = 3. We were talking about when y = 2. Part i only has to do with y = 2.

Answer 30

http://oi41.tinypic.com/2gvsg8j.jpg

Answer 31

Wow, this page with part i is not the same i on my page. In any event there will be only one point where f(x) = 3. That point is at (-11,3).

Answer 32

And that is the only place it crosses right?

Answer 33

Yes!

Answer 34

Thanks

Answer 35

welcome.