Kevin C. answered 07/13/19
Successful Math Tutor -- Recently retired high school math teacher
By definition, the slope of a function at the point (x,y) is the derivative of the function at that point.
Therefore, the slope of the tangent line for y =ex/4 is:
y'=(1/4)ex/4 therefore, the slope = (1/4)e0 = 1/4 = .25