What are the amplitude, period, and midline of the function?

Question

montverde · Answer

attachment

xguardians · Answer

Reference this: http://www.shmoop.com/analytical-trig/graphing.html Let me know if you need additional help; however, this should contain everything you need.

montverde · Answer

whats the function of the graph?

montverde · Answer

@agent0smith @Directrix @ganeshie8

directrix · Answer

Use this definition of amplitude to find the amp for this graph. Amplitude Half the difference between the minimum and maximum values of the range. http://www.mathwords.com/a/amplitude.htm

montverde · Answer

whats the functiion ? i dont know how to find it @agent0smith

agent0smith · Answer

Um, the function is given on the graph...

montverde · Answer

like the equation of the graph?

agent0smith · Answer

You posted the graph of the function.

montverde · Answer

but i dont know the equation? if i knew equation it would be easier to get my answer

montverde · Answer

i know midline is -1

montverde · Answer

nvm i got the answer i think

montverde · Answer

its A

agent0smith · Answer

You don't need the equation. Everything can be found from the graph. 

Yes, midline is -1.

montverde · Answer

montverde · Answer

that website helped me

montverde · Answer

and amplitude is 4

john_es · Answer

Yeah, and the equation is,
$$y=4\cos(x)-1$$

montverde · Answer

thanks

john_es · Answer

You're welcome.