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#1 2018-02-22 07:12:13

Hannibal lecter
Registered: 2016-02-11
Posts: 225

effect of x changes in linear function

If y = f(x) is a linear function, then increasing x by 1 unit changes the corresponding y by m units, where m is the slope.

that's, True. Suppose we start at x = x1 and increase x by 1 unit to x1 + 1. If y = b + mx, the corresponding values of y are b + mx1 and b + m(x1 + 1). Thus y increases by
∆y = b + m(x1 + 1)−(b + mx1) = m.

why I find this hard to understand?

Last edited by Hannibal lecter (2018-02-22 07:12:48)

Wisdom is a tree which grows in the heart and fruits on the tongue


#2 2018-02-22 20:12:25

bob bundy
Registered: 2010-06-20
Posts: 8,462

Re: effect of x changes in linear function

Try drawing a diagram.  I think this will show you what is happening.


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#3 2018-02-26 20:49:12

From: Planet Mars
Registered: 2016-11-15
Posts: 808

Re: effect of x changes in linear function

You can use Desmos Graphing Calculator to learn about it, the best graphing calculator as far as I know. It contains a lots and lots of features, to help you learn graphs.

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There is no substitute to hard work
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