Coordinate Geometry

2. The vertical value in a pair of coordinates (how far up or down the point is)
3. Two lines on a plane that never meet. They are always the same distance apart.
6. To draw on a graph.
9. The vertical axis on a Cartesian plane.
10. Lines that are at right-angles to each other.
12. The horizontal value in a pair of coordinates(how far along the point is)
14. A flat surface with no thickness.
16. A straight mark that extends in both directions without end.
17. Any of the four areas made when a plane is divided by an x-axis and a y-axis.
18. How steep a straight line is (also called slope).
20. When three or more points lie on a straight line.
22. A pair of values that show an exact position; the first value shows the position along and the second value shows the position up or down.
23. An equation that makes a straight line when graphed.

1. The plane containing the x and y axis.
4. The output of a function.
5. The input value of a function.
7. The part of a line that connects two parts.
8. The point halfway along a line segment.
11. The horizontal axis on a Cartesian plane.
13. A special relationship where each input has a single output.
15. The value where a straight line crosses the Y-axis of a graph.
19. The point (0,0) on a two-dimensional graph.
21. A fixed value.
24. A reference line drawn on a graph where measurements can be made to find values.