AP Statistics Question (This was on one of my class tests)

albert87
Sat, 10 Feb 2007 02:46:19 +0000

the professor is saying that slope of the line is undefined??

the slope is undefined for a VERTICAL line.

but we have a HORIZONTAL line here, so the slope is definitely zero.

sorry, i dun get what the professor says, can Calculus please explain thanks. :)