How to plot a plane using ezmesh?

I'm stuck on this question, and we have to use ezmesh for it, and i'm just getting a whole lot of errors

    P = [1, 1, 1];
    C = -2/3
    Q = [C, C, C]
    
    N = [1, 1, 1]
    [x, y] = meshgrid(0:1);
    z = ones(size(x, 1));
    figure(4)
    ezmesh(x, y, z, [0,1]);
    hold on 
    quiver3(Q-P);
    axis equal
    hold off

[darova]

Corect your Z values

[x,y] = meshgrid(0:1);
z = 1 - x - y;
surf(x,y,z)

[Tahirah]

Hey, were you ever able to solve this problem? I have this exact question and I don't what the code to put.