Question

question attached

Answer 1

dy/dx=d/dx (x−3)=d/dx(x)+d/dx(−3)=1−0=1

First line: just general taking-the-derivative notation.

Second line: we use the 'sum rule', which states that the derivative of a sum of quantities is the sum of the derivatives of the quantities. (I don't know if there is actually a difference rule, or if it means the same thing as the sum rule with subtraction -- maybe you heard of it?)

Third line: we use the power rule for the 'x' (derivative of x^n = nx^(n-1)) and the derivative of a constant is 0

Fourth line: simplified.

Answer 2

thank you so much!

Answer 3

wc

Answer 4

How do you attach when asking question

Answer 5

when asking a question you just write question attached then go over to the right where you can comment and there you can attach a file