posted by Amy 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
For this kind of problem, it is always desirable to make a sketch within the limits of the domain, from x=-9 to 18.
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.
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,
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
Thank you for your help