The correct answer is A and B because if you replace the m's with 4 than you do get the answer at the end of the equation. Hope this helps.
hope I'm right but either 2 or 4 i can kinda go either way
For a graph?
If it is for a graph I can help, otherwise you need more information.
It is A. x = 2√3, y = 4√3
f ( x ) = 1 - e^x
We have too find the slope of the graph at the point: f ` ( x o ), where x o is a coordinate of the point where the graph crosses the x-axis ). Also an equation of the tangent line is: y - y o = f ` ( x o ) ( x - x o ) , but we don`t need it here ( we just need to find the slope ).
1 - e ^x = 0
e ^x = 1 => x o = 0
f ` ( x ) = - e ^x
f` ( 0 ) = - e^0 = - 1
The slope is : m = - 1