finding matrix base on linear equation

hello,

given a linear quation, y=ax+b y=-0.15x-21.3, how can find a matrix for y=Ax?

thanks

Answer 1

[Star Strider]

I’m not certain what the desired result is here.

Try this —

x = linspace(-10, 10, 5);
y = -0.15*x-21.3;

X = [x(:), ones(size(x(:)))]                        % Design Matrix

X = 5×2

-10 1 -5 1 0 1 5 1 10 1

Coefficients = X \ y(:)                             % Proof

Coefficients = 2×1

-0.1500 -21.3000

.