Find the function (f(x))
Choose the point (x=a) where the tangent is needed
Compute the derivative (f'(x))
Evaluate (f'(a))
Use (f'(a)) as the slope of the tangent line
If needed, find the point on the curve ((a, f(a)))
Use point-slope form: (y – f(a) = f'(a)(x – a))