Friday
March 24, 2017

Post a New Question

Posted by on .

Can anyone help with the following problem please...Thank u so much

Let f(x) =|9x|. For the area above the x-axis and between the lines x= -9 and x=18

a. draw and label a sketch with
the area shaded

b. find the area of the region in
the xy-plane under the graph
of f(x)

  • Pre-Calc - ,

    For this kind of problem, it is always desirable to make a sketch within the limits of the domain, from x=-9 to 18.
    See:
    http://img510.imageshack.us/img510/2928/1291868155.png

    Using the formula for the area of a triangle as:
    Area = (1/2)base*height
    You can find the areas of the two triangles between the function and the x-axis.

    If you need further help, don't hesitate to post.

  • Pre-Calc - ,

    Amy, please check to see if your question has been answered before posting the same question again.

    you asked the same question with only a small change yesterday,
    http://www.jiskha.com/display.cgi?id=1291781963

    MathMate has gone to some length to answer it again, even creating a picture for you.

    make a note of your post by jotting down the time of the first posting, even though it moves off the page, it is then rather easy to find

  • Pre-Calc - ,

    Thank you for your help

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question