How do you do functions i dont understand how to get f(x) and then graph it

IrishJuniorCert
I think Alex is complicating this a bit much.
As far as I'm aware, you fully understand functions, just not how to graph them.
Well, it's pretty easy once you know that:
x = your input.
y = your output.
so say your x = 4. Then on the X Line, you are +4 across.
Input: 4
Function: x + 1
Output: 5
So the x value is 4 and the y value is 5. You can now graph your line. As Alex said, there will be much more complex types of functions where x will be squared and this will give you a parabola.

aoife0509
Thanks for your help i understand it a bit more nw

Me
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