Finding derivative question, please HELP?

Question

What is the derivative of y – kx? (k is a constant)

a) k
b) 1
c) –k
d) 0

Answer 1

Probably a) k.

It depends on if you mean y = kx, y = -kx, or y - kx = 0 (which is equivalent to y = kx). If you mean y = kx, the likeliest interpretation based on how you formatted previous questions, the answer is a) k, because the derivative of a linear equation in x is always equal to the coefficient of x.

Answer 2

When you take the derivative, you would have:

y' - k = 0

or

y' = k
a)