I want lo graph a interseccion

I dont now how can I graph an interseccion, I try with tutorials but didnt work

the functions are

x= 3 -y^2

y = x -1

The interseccions are

(-1,-2) (2,1)

[Dyuman Joshi]

What exactly does "graph an intersection" mean in this context?

Please specify how it "didn't work".

Answer 1

[Chunru]

% x= 3 -y^2
y1 = (-3:0.02:3);
x1 = 3 - y1.^2;

% y = x -1
x2 = (-2:0.01:3);
y2 = x2 -1;

plot(x1, y1, 'r-', x2, y2, 'b-');