caishaax3
  • caishaax3
What is the equation of a vertical line passing through the point (3, −5)? A. y=-5 B. x=-5 C. y=3 D. x=3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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triciaal
  • triciaal
|dw:1438572480910:dw|
caishaax3
  • caishaax3
y=-5?
triciaal
  • triciaal
which axis is vertical? the line through the point is parallel to the vertical axis

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More answers

caishaax3
  • caishaax3
vertical would be up and down therefore making it y=-5? correct
caishaax3
  • caishaax3
?
triciaal
  • triciaal
vertical is up and down correct not y =
triciaal
  • triciaal
|dw:1438572752351:dw|
caishaax3
  • caishaax3
i dont get how it would be x when the x axis is horizontal
jim_thompson5910
  • jim_thompson5910
@caishaax3 consider what points lie on this vertical line. What do all of these points have in common?
caishaax3
  • caishaax3
hmmmm, i wanna say they fall on the x axis but i feel like im wrong
jim_thompson5910
  • jim_thompson5910
we're given (3,-5) what's another point that lies on the vertical line?
caishaax3
  • caishaax3
-3
jim_thompson5910
  • jim_thompson5910
look at points directly above or below (3,-5)
jim_thompson5910
  • jim_thompson5910
for instance, (3,2) lies directly above the given point |dw:1438573088091:dw|
jim_thompson5910
  • jim_thompson5910
making sense?
caishaax3
  • caishaax3
ok, do i plug that into a formula? to find my answer
jim_thompson5910
  • jim_thompson5910
do you see how I got (3,2) ?
caishaax3
  • caishaax3
you went over three up two
jim_thompson5910
  • jim_thompson5910
yes
jim_thompson5910
  • jim_thompson5910
and notice how it's directly above (3,-5)
jim_thompson5910
  • jim_thompson5910
what is another point on this vertical line?
caishaax3
  • caishaax3
(3, -1)
jim_thompson5910
  • jim_thompson5910
good |dw:1438573350010:dw|
jim_thompson5910
  • jim_thompson5910
how about one more point what's another point on this vertical line?
caishaax3
  • caishaax3
(3, 4)
jim_thompson5910
  • jim_thompson5910
|dw:1438573401061:dw|
jim_thompson5910
  • jim_thompson5910
notice how all of the points plotted, and any other point we didn't get to, all have the same thing in common: they have an x coordinate of 3
jim_thompson5910
  • jim_thompson5910
|dw:1438573439286:dw|
caishaax3
  • caishaax3
so x=3
jim_thompson5910
  • jim_thompson5910
yes. this vertical line is the equation x = 3 EVERY point on this line has an x coordinate of 3. The y coordinate doesn't matter
caishaax3
  • caishaax3
thank you so much
jim_thompson5910
  • jim_thompson5910
no problem

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