Question about C1W4 Graded Quiz Question 8

For the course Linear Algebra for Machine Learning and Data Science, C1W4 Graded Quiz, Question 8: In the answer choices, it suggests the constant ‘k’ can be any real value. Isn’t it true that k cannot be zero? So k can be any real value except zero, correct? If so, then some of the answer choices for question 8 should be edited for correctness.

constant k cannot b 0 as k is constant of proportionality between two variables and as you know constant k value don’t change even if the variables changes.

if k is 0 then there is no proportionality between x and y axis variable points. your understanding is correct.

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Got it, thank you. I made a ‘content improvement’ suggestion for the C1W4 quiz question 8 to alert the instructor to edit the answer choices in the next revision of the course.