i've searched many webpages and yet can't find a specific and easy answer, so im writting here and hoping to get the answer. How do i solve this equation on Octave graphically? There is the system:

clf;
x = (-5: 1: 5);
y = sqrt(29 - x.^2);
plot(x,y,'.-');
hold on

x = (-5: 1: 5);
y = sqrt(9   4*x.^2);
plot(x,y,'.-');