Question

A line has an undefined slope and includes the points (n, - 5) and (4,1). What is the value of n?

Answer 1

n=4

Explanation:

To get an undefined slope, the denominator has to be zero

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

This means that x2-x1 = 0

or x2=x1

So 4=n