Week 2 assignment 1 Linear regression

whenever i submit my assignment i get graded with 0% although my results are identical to the expected output
how can i solve this problem?

Please move your post to the current course category as described here and share the feedback of the grader. Click on the “Show grader output” and see what it says.

Passing the tests in the notebook does not mean your code is perfect. The grader uses different tests.