Determining the equation from the graph of a tangent function of the form f(x)=atan(bx+c)+d

[reallybadstomachache]

Not sure how to determine the values of b and d of the tangent function in the form of f(x)=atan(bx+c)+d from the given graph in the attached image.
Please help !!

 

[BigBeachBanana]

Not sure how to determine the values of b and d of the tangent function in the form of f(x)=atan(bx+c)+d from the given graph in the attached image.
Please help !!
View attachment 31425

Have you figured out c? What do b and d do to the graph?

 

[Deleted member 4993]

Not sure how to determine the values of b and d of the tangent function in the form of f(x)=atan(bx+c)+d from the given graph in the attached image.
Please help !!
View attachment 31425

Sketch approximately f(x) = tan(x) and compare with the graph presented above