Question

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

Answer 1

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 :)

Answer 2

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

Answer 3

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.