If an object and its image under the transformation shear(or stretch) are given, how can we find the invariant line.

What is the difference between shear and stretch in mathematics?

If you have the shear/stretch factor you can calculate it.

No need to double post...

If you have the shear/stretch factor, yes, you can sketch the resultant image of an object.

In shear the area of the actual object and the area of the image will be the same... in stretch it differs

find whether the x or y coordinates have remained constant through out the transformations.if x values constant it is the invariant line while if y constant it is

Relationship between area of object and area of image in stretch.

In stretch size of the object is changes but in shear it remains the same

In shear the area of the actual object and the area of the image will be the same.... In stretch it differs
Yes you are right