# Plot the plane x+z=0 in mathematica

1. Oct 17, 2013

### nameVoid

How do I plot the plane x+z=0 in mathematica on the xyz plane

2. Oct 17, 2013

### Staff: Mentor

If you have Mathematica 9, just try
Code (Text):
= plot x+z=0 plane

3. Oct 18, 2013

### nameVoid

This is not correct tag plus in plot x+z is protected

4. Oct 18, 2013

### Staff: Mentor

What version of Mathematica do you have? Student version or Full version?

5. Oct 19, 2013

### vanhees71

I'd suggest to use ParametricPlot3D (see attachement). The Student and full version of Mathematica are usually the same in function. I've the home edition of Mathematica 9 on my private laptop and it's absolutely identical with the full version on our institute's computers.

#### Attached Files:

• ###### parametric-plot-example.png
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6. Oct 19, 2013

### nameVoid

Again how to plot x+z=0 in mathematica

7. Oct 19, 2013

### Bill Simpson

In Mathematica, any version, Plot3D wants an expression or function giving z values as a function of x and y coordinates so... turn x+z==0 into x==-z into -(x+0*y)==z (or just plot -x) and now you have a function giving z values to plot.

In[1]:= Plot3D[-(x + 0*y) (*==z*), {x, -3, 3}, {y, -4, 4}]
Out[1]= ...PlotSnipped...

Carefully check some points on the surface to verify this is correct.
And, if you don't already know... this ---> (*==z*) <--- is a comment in Mathematica code.

8. Oct 22, 2013

Thank you