Question 54858
18.	Write the equation of the line passing through (–3, –7) and (–3, –6).
A)	x = –3
B)	y = –3
C)	y = x – 3
D)	y = x
First notice that the slope is undefinded: {{{m=highlight((y2-y1)/(x2-x1))}}}
{{{m=(-6-(-7))/(-3-(-3))}}}
{{{m=(-6+7)/(-3+3)}}}
{{{m=1/0}}} The demoninator=0 therefore the slope is undefined.  Vertical lines have undefined slopes.  The equation of a vertical line going through (-3,-7) and (-3,-6) is x=-3 (a)
Happy Calculating!!!