You can either use `CAS`

, or `Algebra View`

and `Graphics View`

together, to find the points of intersection between graphs. Instructions for both methods are detailed below.

`GeoGebra`

Instruction 1

`CAS`

- 1.
- Open
`CAS`

under`View`

in`Menu`

. - 2.
- Type $f(x)$ in
`CAS`

asf(x) := $\dots $

and press

`Enter`

. Do the same with $g(x)$. - 3.
- In an empty row in
`CAS`

, typef = g

and click

`Solve`

in`Toolbar`

. You should get a list of solutions. - 4.
- For each of the solutions
`x`

in the list from Step 3, type(x,f(x))

in an empty row in

`CAS`

and press`Enter`

.`GeoGebra`

then displays the points of intersection.

`GeoGebra`

Instruction 2

`Algebra View`

and `Graphics View`

- 1.
- Open
`Algebra View`

and`Graphics View`

under`View`

in`Menu`

. - 2.
- Type $f(x)$ into
`Algebra View`

and press`Enter`

. Do the same with $g(x)$. These now appear as functions in`Algebra View`

and as graphs in`Graphics View`

. - 3.
- In
`Toolbar`

, click`Intersect`

(it is under the same menu as the`Point`

tool). - 4.
- Click both graphs. The order does not matter.
- 5.
- You will now find the points of intersection displayed in
`Algebra View`

.

If you wish, you can additionally choose the axes to find the intersection between a graph and the axes.