graph and write the equation of the line

Question

with undefined slope and passing through the point (-3,0)

Answer 1

A line has an undefined slope when its run is zero.  This is because the slope of the line is rise over run.  When you divide any number by zero, the result is undefined.  Since the line has no run, this makes it a vertical line.  When a line is vertical, the x-coordinate of each point that is on that line is constant.  The x-coordinate of this line is -3. So the equation of this line is

 

x = -3