Question 1043594: How to determine in which quadrant or on what axis?
How to slope of the line joining the pair of points?
How to slope of the line?
Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! 
The upper right corner is the first quadrant where x and y are both positive, y being vertical from the horizontal line, x being along the line.
The upper left is the second quadrant, where x is negative but y is positive
The lower left is the third quadrant, where x and y are both negative
The lower right is the fourth quadrant, where x is positive and y is negative.
Slope is the change in vertical nature of the line. It is the change in y over a certain region divided by the change in x.
Here, the y value goes up 1 unit (positive) for every 1 unit to the right (x, positive), so the slope is 1.
One can take the slope of a line by looking at any two points.
(x,y). (2,4) and (3,9) have a slope of (9-4)/(3-2) OR (4-9)/(2-3)=5 in both instances. The y changes have to be done in the same order as the x-changes.
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