SOLUTION: Write the equation of the line passing through (3, –3) and (3, –6).

Algebra ->  Graphs -> SOLUTION: Write the equation of the line passing through (3, –3) and (3, –6).      Log On


   

Question 62085This question is from textbook
: Write the equation of the line passing through (3, –3) and (3, –6). This question is from textbook

Answer by rchill(405) About Me  (Show Source):
You can put this solution on YOUR website!
The slope, m, is defined as m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29. It doesn't matter which ordered pair is x%5B1%5D,y%5B1%5D and x%5B2%5D,y%5B2%5D because you'll get the same answer. Using substitution we get m=%28-3-%28-6%29%29%2F%283-3%29. Because the denominator is 0, the slope is undefined and that means the line is vertical (i.e., x values of all coordinate pairs are the same). Because x=3 for both ordered pairs, the equation of the line is x=3.