Pca, Principal Components, Dimensionality Reduction, Eigenvectors, Eigenvalue.
new axes are nothing but the Eigenvectors (with magnitude 1). Hurray! Since we have changed our axis, we will need to plot our data points according to these new axes. Wow! isn’t that just awesome? We figure out that what we are given in x_pca is simply translating the data points from the (0,0)