What is the derivative of #-x#? Calculus Basic Differentiation Rules Power Rule 1 Answer Mika · YouDid Dec 16, 2014 Derivative of x would be 1. In this case, x is negative so it would be -1. We can see this easily: #[-x]' = -[x]' = -1# Answer link Related questions How do you find the derivative of a polynomial? How do you find the derivative of #y =1/sqrt(x)#? How do you find the derivative of #y =4/sqrt(x)#? How do you find the derivative of #y =sqrt(2x)#? How do you find the derivative of #y =sqrt(3x)#? How do you find the derivative of #y =sqrt(x)#? How do you find the derivative of #y =sqrt(x)# using the definition of derivative? How do you find the derivative of #y =sqrt(3x+1)#? How do you find the derivative of #y =sqrt(9-x)#? How do you find the derivative of #y =sqrt(x-1)#? See all questions in Power Rule Impact of this question 2653 views around the world You can reuse this answer Creative Commons License