SOLUTION: I can't figure out this problem: Write the equation of the line passing through (4, 4) and (4, 2). Choices are: A) y = 4 C) x = 4 B) y = -2x

Algebra ->  Graphs -> SOLUTION: I can't figure out this problem: Write the equation of the line passing through (4, 4) and (4, 2). Choices are: A) y = 4 C) x = 4 B) y = -2x       Log On


   

Question 43530: I can't figure out this problem:
Write the equation of the line passing through (4, 4) and (4, 2).
Choices are:

A) y = 4 C) x = 4
B) y = -2x D) y = x + 4
Found 2 solutions by Nate, jake_6233:
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
M = (y2 - y1)/(x2 - x1) = (4 - 2)/(4 - 4) = 2/0 undefined
Since the line's slope is undefined, the linear line is declared as vertical.
x+=+4
(C)

Answer by jake_6233(74) About Me  (Show Source):
You can put this solution on YOUR website!
A) y = 4 C) x = 4
B) y = -2x D) y = x + 4
The first thing to do is calculate the slope of your line
m=y%282%29-y%281%29%2Fx%282%29-x%281%29 (these are subscripts not exponents) we get 2/0 which means that we have a vertical line or x=4 (both x values are 4 in your two points)