# Thread: Standard form of equation that passes through this line

1. ## Standard form of equation that passes through this line

(-5,11) and (-5,-2)

The thing is, I get it and it divides by zero. Am I doing something wrong?

2. Nope! This one is a trick question!

We have a line that passes through (-5,11) and (-5,2).

What is the same about those two points?

3. The x's are the same!

4. Do you see it now?

OK, now here's the hint:
All points lying on the line that passes through these two points have the same x.

5. Oh!

...oh, okay.

So hold on:

is it

y = 1x + 0?

or...

...

6. No!
"All x's are -5", express this mathematically!

7. All x's are -5?

So.

x = -5?

8. Originally Posted by mankvill
All x's are -5?

So.

x = -5?

Absolutely!

$\displaystyle x=-5$ represents all points that have the same x, -5. So this is the line we were looking for.

9. Originally Posted by wingless
Absolutely!

$\displaystyle x=-5$ represents all points that have the same x, -5. So this is the line we were looking for.
...really?

...huh. So the answer to the question is just x = 5?

...very strange. I'll keep that in mind in the future!

Thanks a ton!

10. Originally Posted by mankvill
...really?

...huh. So the answer to the question is just x = 5?

...very strange. I'll keep that in mind in the future!

Thanks a ton!
Also consider what happens when $\displaystyle y=3$. And try to graph it.
You're welcome