Math Is Fun Forum

criticalCat

Novice

Registered: 2025-09-01

Posts: 8

Is it possible to write a formula for this graph?

I have the following graph:

I'm wondering if it is possible to describe the graph using a mathematical formula?

Bob

Administrator

Registered: 2010-06-20

Posts: 10,809

Re: Is it possible to write a formula for this graph?

hi criticalCat

Weclome to the forum.

As the graph has three entirely different sections, it won't be possible to find a single formula for this. The usual way to describe a graph like this is by a piecewise definition.

ie. Find separate formulas for each section.

The first would be:

For x ≤ -4  f(x) = 3x + 25

Are you able to find the correct formulas for the other two sections?

Please post back.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob