Line CD contains points A (4, -7) and B (4, 8). The slope of line CD

Question

alones · Answer

Hey Welcome to Openstudy! :)
So this is about math .right???
ummm I think you'll get your question answered faster there than here..cause it's actually the wrong subject you posted your question :)

hartnn · Answer

openstudy.com/study#/groups/Mathematics

Mathematics would be the right section to ask this question.
This is a feedback section, used for general feedback of the website.

so,
please close your question here and 
post it in the Math section.

Let me know if you need any help doing it

hartnn · Answer

anyways,
The slope of the line through points (x1,y1) and (x2,y2) is given by :
$\huge m=\frac{y_1-y_2}{x_1-x_2}$
now,just put the values and find m.