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The Rectangular Coordinate System 1
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Complete each sentence by typing your answer in the box. Use lower case letters only.
1.
 A set of ordered pairs of real numbers is called a

2.
 The set of all first coordinates in a relation is called the of the relation.

3.
 The set of all second coordinates in a relation is called the of the relation.

4.
 On a rectangular coordinate plane, every ordered pair of real numbers is associated with a unique on the plane.

5.
 The horizontal number line in a rectangular coordinate plane is called the .

6.
 The vertical number line in a rectangular coordinate plane is called the .

7.
 The point of intersection of the axes in a Cartesian plane is called the .

8.
 The of an equation in two variables x and y is the set of all points (x,  y) on the plane whose coordinates satisfy the equation.

9.
 The of a graph is the x-coordinate of the point at which the graph crosses the x-axis.

10.
 The of a graph is the y-coordinate of the point at which the graph crosses the y-axis.

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