Question

Find the slope of the line that passes through the points (3,0) and (3,-2).
A.-4
B.4
C.0
D.The slope is undefined

Answer 1

$\frac{-2-0}{3-3}= \frac{-2}{0}=$ undefined 

Answer 2

when given the points (x1,y1) and (x2,y2)

slope=(y2-y1)/(x2-x1)

we have
(3,0) and (3,-2)
(x,y)
x1=3
y1=0
x2=3
y2=-2

slope=(-2-0)/(3-3)=-2/0=undefined since you caon't divide by zero

answer is D