3x-y+4=0 how to solve this equation in matlab

3x-y+4=0

[Star Strider]

There are an infinity of solutions for one equation in two unknowns.

Answer 1

[Sam Chak]

Hi @Adam

The given equation

can be rewritten in this familiar line equation form

You can substitute any real value into x and find y

If there is another curve that intersects with the line, then you can find a unique solution.

If there are two intersections, then there are two solutions.

x = -4:0.1:4;
y = 3*x + 4;
plot(x, y), grid on
xlabel('x'), ylabel('y')