chapter 3 vocab

5. the vertical number line on a coordinate plane
7. the horizontal number line on a coordinate plane
8. the four regions of a coordinate plane separated by the x-axes and y-axes
9. a line that divides a figure into two halves that are reflections of each other
13. of numbers and their opposites
15. a plane formed by a horizontal line called the x-axes and a vertical line called the y-axis
16. the point where the two axes of a coordinate plane intersect

1. the distance of an integer from zero on a number line
2. two numbers that are the same distance, but in opposite direction, from zero on a number line
3. any number that can be written as a ratio a/b where a and b are integers and b doesn't equal 0
4. any integer less than zero
6. the second number in an ordered pair; tells the distance to move up or down from (0,0)
10. a pair of numbers used to locate a point on a grid
11. any integer more than zero
12. the first number in an ordered pair; tells the distance to move right or left from (0,0)
14. a figure has a line symmetry if it can be folded about a line so that it's two parts match exactly