what does x-coordinate mean?
473627
on a graph every point has an x and y coordinate.  The vertical(up-down) is the Y-coordinate, the horizontal (left-right) is the x-coordinate
415594
R u saying about the midpoint on x and y axis?\n\nWe know that the midpoint is the half of a line length. mathematically..\n               \n               note that 1/2 is the definition of half\n               midpoint= the length of the line/2\n\non x axis, the midpoint(mp) is\n                  mp=(x2-x1)/2\n             \n        x2-x1 is the length of a line in x axis\n\nthe same goes to y axis, we get\n                 mp=(y2-y1)/2\n\n\nCombine both equations,( since mp is a coordinate), we get\n             mp= ( mp of x axis , mp of y axis )\n             mp=( (x2-x1)/2   ,   (y2-y1)/2)   )
667991
A horizontal line means that the x-coordinate can be any real number while the y-coordinate has to stay the same no matter what x value.  Thus, the point (-.5,2) has x-coordinate -.5 and y-coordinate 2.  Thus the horizontal line through that point has equation y=2.
280184
A coordinate plane is the whole plane defined by two intersecting axes, let's call them x and y.\nA quadrant is the part of the coordinate plane defined by taking only the positive or negative half of each axis.\n\nThere are four quadrants in the plane, usually numbered as follows:\n1st quadrant: {x>0, y>0}\n2nd quadrant: {x<0, y>0}\n3rd quadrant: {x<0, y<0}\n4th quadrant: {x>0, y<0}
1063540
This represents a plane that goes through the origin. It is perpendicular to the vector <1,1,1>.
583383
if i understood correctly and b and -2 are the x and y coordinates i get x= 1/2
918264
IF you mean like an ordered pair it is a point on a graph.  An example is:  (x,y)  so you can have (3,5)  or (-7,-88)  Otherwise I'm not sure what you're talking about.
170823
It's any system of axes along which something can be measured and expressed.  It can be 1-, 2-, 3- or more-dimensional.  The axes are usually all perpendicular to each other (which is hard to visualize in more than 3 dimensions) but don't have to be.  A frequent use of 3-D coordinate frames is to express a location, for example: "I live at 6th Avenue and 34th St. on the 100th floor," or "Starting at the old apple tree, take 17 paces North, 25 paces East, and dig down 50 feet."  Or a size: "Packages must be no larger than 5 feet long, 3 feet wide and 2 feet deep."
746423
If from left to right gets bigger or more positive, and from down to up gets bigger or more positive regarding numeric values, then it makes sense to label the quadrants in that manner.  You start with all positive values in the first quadrant.  Then y values are positive and x values are negative in the second.  Then all values are negative in the third.  Last, y values are negative and x values are positive.\nThe assumption is that x is on the horizontal axis and y is on the vertical axis.
869679
All points on a vertical line have the same x-coordinate.  So, their equations are always x = that number.  Here you know that one point has an x-coordinate of -1, so all the others will too.  Therefore its equation is x = -1.
896230
the y coordinates are the same i.e. -1, \nso the line is parallel to the x axis and passes through -1 on the y axis.\nits slope is parallel to the x axis.
195396
What's with the ... ? Is that a space for a number, are you supposed to guess whether to use the + or the x ? I don't get it, I think I'm gonna cry :~(
610972
considering both y values are -2 for A and C....\n\nwe know that a straight line exists between these two points, which means that it HAS to be 1 of the 4 sides.\n\ngiven that, the coordinates or K and L HAVE to be (3, infinity (EXCEPT -2)) and (-4, infinity (EXCEPT -2))
931671
it's just a symbol to indicate\na right angle-hit the site below\nfor more details of angles etc\n\nhttp://www.coolmath.com/\n\ni hope that this helps
433823
Revolving about the x-axis yields a cone whose tip is at the origin and opens in the positive x direction.  Taking discrete x slices (dx) yields a disk whose volume is given by pi*(kx)^2 dx.  Integrating from 0 to h gives us (where "S" is used as the integration symbol):\n\nV = S pi*(kx)^2 dx\n= pi * k^2 S x^2 dx\n= (pi * k^2) * (x^3)/3\n\nEvaluating from 0 to h gives us\n= (pi * k^2) * (h^3)/3 - (pi * k^2) * (0^3)/3\n= (pi * k^2 * h^3)/3
1117247
They are called the X axis and the Y axis.\n\nThe position of any point on a grid can be described by a pair of numbers: its coordinates.\nThe first number, its x coordinate, measures its distance from the origin in the x direction. The second, its y coordinate, measures its distance from the origin in the y direction.
41266
(_o_)   Do you know what these symbols mean?\n\n (_x_)\n  \n (_!_)