Plot will not show lines

I'm trying to show multiple lines on a graph but the lines do not show up on the figure.

x = [-0.923 : 0.01 : -0.633] ;
for n = 1 : 1 : length(x)
    f(n) = 16*x(n)^3 - 13*x(n)^2 + 12*x(n) + 15 
    g(n) = -7*x(n)^3 - 6*x(n)^2 + 4*x(n) - 6 
end
plot(x,f(n), x,g(n)) 
ylabel('f(x) and g(x)')
xlabel('x values')   

[KSSV]

1. Read about element by element operations.
2. You are plotting only one point i.e n = length(x).
3. You have not initalized f, g

Answer 1

[KSSV]

x = -0.923 : 0.01 : -0.633 ;
f = 16*x.^3 - 13*x.^2 + 12*x + 15 ;
g = -7*x.^3 - 6*x.^2 + 4*x - 6 ;

plot(x,f, x,g) 
ylabel('f(x) and g(x)')
xlabel('x values')   

[Christina Allen]

thank you!! I needed to label the vertical components of my plot as f and g, instead f(n) and g(n).

[KSSV]

Read about label and legend.