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#1 2017-05-26 21:43:43

bart.deferme
Member
From: Belgium
Registered: 2016-09-16
Posts: 5

Functions: names to put "sign" and "up/down" in a scheme?

Hi
I'm a Belgian CLIL teacher and I'm teaching CLIL maths since September.
Next week I want to start with functions, but I have the problem I can't translate some things.
Can someone please help me what the name is in English?

1) First one is a kind of scheme/table where you can say if a function goes up or down.
It looks like this for a linear function (the arrow goes to the right and up if the function/line goes up and the arrow goes to the right and down if the function/line goes down):
   x |       
--------------------
f(x) |     -->

2) The second one is a kind of scheme/table where you can say if a function is positive or negative.
This example is when the zero of the function is (5,0) and the straight line goes up.

   x |       5
--------------------
f(x) |   -  0   +

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#2 2017-05-27 00:12:11

bart.deferme
Member
From: Belgium
Registered: 2016-09-16
Posts: 5

Re: Functions: names to put "sign" and "up/down" in a scheme?

Meanwhile I already found the word sign table.
But how do you call increasing, decreasing... in one word? The ... of a function. In Dutch we call it "verloop", but it's the same like process..., but what's the right mathematical term?

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