||combines two real number lines
perpendicular to each other and that intersect at 0 on
||The great French
mathematician/philosopher who developed the coordinate
system. He lived from 1596-1650.
||the x-axis and y-axis in a coordinate
||the point at which the x and y axes
||the four regions created by the
intersection of the axes.
||an ordered pair that indicates a point of
Signs of Coordinates in the Plane
In Quadrant 1, the x-coordinate and y-coordinate are both
In Quadrant 2, the x-coordinate is always negative and the
y-coordinate is always positive.
In Quadrant 3, the x-coordinate and y-coordinate are both
In Quadrant 4, the x-coordinate is always positive and the
y-coordinate is always negative.
On the x-axis, the y-coordinate is always 0.
On the y-axis, the x-coordinate is always 0.