BCA - Computer Graphics

Scaling transformations alter the shape of an object by multiplying each vertex (x,y) by the scaling factor Sx,Sy, where Sx is the x scaling factor and Sy is the y scaling factor.

When both of these parameters are assigned the same value, uniform scaling occurs.

Differential scaling occurs when the scaling factors sx and sy are given different values. It is more widely utilized and is used in the majority of design applications.