Answer:
Step-by-step explanation:
Find dy/dz of the function using the power rule
y' = 2z - 4z^3
Plug in z = -1 to y' to find the slope at that point, do the same for y(z)
y'(1) = 2
y(1) = 0
Use the point slope formula
y - y = m (x- a)
y = 2 (z + 1) + 0