See question in image.
Please show workings .

see explanation

Step-by-step explanation:

Given f(x) then the derivative f'(x) is

f'(x) = lim ( h tends to zero )

      = lim ( h to 0 )

     = lim ( h to zero )

     = lim ( h to zero )

     = ( lim h to 0 )

     = ( lim h to 0 )

     = lim ( h to 0 ) - ← cancel h on numerator/ denominator of both

     = lim( h to 0 ) 2(2x + h) - 1 ← let h go to zero

f'(x) = 4x - 1

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: