Question

consider f(x)= 9-e^x
Find the slope of the graph of f(x) at the point where the graph crosses the x-axis.
1-slope=?
Find the equation of the tangent line to the curve at this point.
2-y=?
Find the equation of the line perpendicular to the tangent line at this point. (This is the normal line.)
3-y=?

Answer 1

Part I

Answer 2

Part II

Answer 3

You got your negatives mixed up there Kira. :)
\[f \prime=-9\]

Answer 4

thank you i understood