Graph the function f(x) =x

Steph Annie

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How to graph the function f(x) =x and the function g(x) =x^2

​Graph the function f(x) = x and the function g(x) = x2 in the same set of coordinate axes. At what point (s) do the functions intersect? Label the points on your graph.

It is my understanding that the function f(x) = x is the most linear function, called the identity function, because it assigns each real number to itself.

g(x) = x2 is a squaring function if I'm correct.


However, what I'm confused on is below the instructions for the problem my teacher wrote a table of values for which she said to use.
This is fine. The table of values starts with a row for x, and then a row for f(x)=x+1, and a final row for x, f(x)

I am confused on the row f(x) = x+1.
I thought the instructions were to "graph the function f(x)= x

Where did x + 1 come from? :confused: I have just started graphing functions so still new to the concept.

Thank you!
 
Last edited:
Graph the function f(x) = x and the function g(x) = x2 in the same set of coordinate axes. At what point (s) do the functions intersect? Label the points on your graph.

It is my understanding that the function f(x) = x is the most linear function, called the identity function, because it assigns each real number to itself.

g(x) = x2 is a squaring function if I'm correct.


However, what I'm confused on is below the instructions for the problem my teacher wrote a table of values for which she said to use.
This is fine. The table of values starts with a row for x, and then a row for f(x)=x+1, and a final row for x, f(x)

I am confused on the row f(x) = x+1.
I thought the instructions were to "graph the function f(x)= x

Where did x + 1 come from? :confused: I have just started graphing functions so still new to the concept.

Thank you!

I am confused too!

Can you please type the rows (exactly) as those were given to you?
 
I am confused too!

Can you please type the rows (exactly) as those were given to you?


Yes, okay. I just saw where one can make a table so it should look clearer now.
This is the table of values I have on my paper.

And it is the second row I am confused on. Why is it x + 1 and not f(x) =x



xf(x) = x +1 x, f(x)
 
Oh shoot. It doesn't look like the table appears when I view it after posting. Don't know why.



Yes, okay. I just saw where one can make a table so it should look clearer now.
This is the table of values I have on my paper.

And it is the second row I am confused on. Why is it x + 1 and not f(x) =x



xf(x) = x +1 x, f(x)
 
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