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Ordered Pair

edited March 2006
What is an ordered pair?
edited March 2006
8 replies
Post edited by nash_nowitzki on

Replies to: Ordered Pair

• 4176 replies529 threads Senior Member
A coordinate point.
• 72 replies8 threads Junior Member
say 2x + 3y < 20

is this illegal (1,1) (1,2) (1,3)?
• . 1112 replies27 threads Member
The solutions you mentioned are all possible answers to the inequality you provided.
• 72 replies8 threads Junior Member
What is the perpendicular line to the equation y = 3x + 5

y= -1/3x - 5 ?
• 219 replies21 threads Junior Member
y = -1/3x. The y-intercept could be anything, not specifically -5; they'd need to tell you a specific point of intersection for you to solve it.
• . 1112 replies27 threads Member
Whenever you need the equation of a line perpendicular to the line you have, take the negative reciprocal of the slope.
• 72 replies8 threads Junior Member
I know the negative reciprocal thing.

BUT WHAT DO YOU DO WITH THE Y-intercept?

So if the equation is y= 3x + 5

all of the following are correct answers for the line perpendicular to it?

a) y =-1/3x+5
b) y= -1/3x
c) y= -1/3x -5
• 4176 replies529 threads Senior Member
I know the negative reciprocal thing.

BUT WHAT DO YOU DO WITH THE Y-intercept?

So if the equation is y= 3x + 5

all of the following are correct answers for the line perpendicular to it?

a) y =-1/3x+5
b) y= -1/3x
c) y= -1/3x -5
Yes. Indeed. As long as it has the correct slope, ANY y-int will work.