Creates a new Matrix3 that scales by the specified factors
overload 1:
matrices.scale3(vec)
| Method Property | Fluent Description | Representation |
| vec accepts | a Vector3 | |
| Return Value | a Matrix3 | |
overload 2:
matrices.scale3(x, y, z)
| Method Property | Fluent Description | Representation |
| x accepts | a Number | |
| y accepts | a Number | |
| z accepts | a Number | |
| Return Value | a Matrix3 | |