Choose the equation of the vertical line that passes through the point (4, -3).

y = 4

x = - 3

y = -3

x = 4

Question

Choose the equation of the vertical line that passes through the point (4, -3).

 y = 4

 x = - 3

 y = -3

 x = 4

kfujioka · Answer

With vertical lines, are x's or y's constant?

anonymous · Answer

y

kfujioka · Answer

Do you say that because the y-axis is the vertical one?

anonymous · Answer

Hah yeah

kfujioka · Answer

Easy to see the confusion.  The y-axis is typically drawn at x=0.  This is a vertical line that passess through x=0.

kfujioka · Answer

That is to say vertical lines are lines of constant x values.

anonymous · Answer

so I was right?

kfujioka · Answer

No, you said y's are constant for vertical lines.

kfujioka · Answer

Should I try explaining again?

anonymous · Answer

no i get what you're saying.. But I'm still not sure what the answer is

kfujioka · Answer

You want the equation for a vertical line passing through a given point.  You should be able to narrow the four options down to two.  Which two?

anonymous · Answer

Oh! B

kfujioka · Answer

you say that because... ?

anonymous · Answer

because the constant is X and they ask me to find what passes through 4.-3 and the answer is B

kfujioka · Answer

Good!  But you have the order of the coordinates wrong.  The ordered pair is written (x,y)

anonymous · Answer

oh lol. so I was right?

kfujioka · Answer

No.  It should be D (x=4)

anonymous · Answer

Oh okay thanks(:

kfujioka · Answer

So long as you get it... do you have another problem to work?

anonymous · Answer

hmm. no but thanks I really appreciate all the help you've given me(: