chapter 3 vocab

3. the vertical number line on a coordinate plane
4. a pair of numbers used to locate a point on a grid
7. a plane formed by a horizontal line called the x-axes and a vertical line called the y-axis
8. the point where the two axes of a coordinate plane intersect
11. a line that divides a figure into two halves that are reflections of each other
12. the first number in an ordered pair; tells the distance to move right or left from (0,0)
13. a figure has a line symmetry if it can be folded about a line so that it's two parts match exactly
14. any integer more than zero

1. the distance of an integer from zero on a number line
2. any integer less than zero
3. the second number in an ordered pair; tells the distance to move up or down from (0,0)
5. two numbers that are the same distance, but in opposite direction, from zero on a number line
6. any number that can be written as a ratio a/b where a and b are integers and b doesn't equal 0
9. the four regions of a coordinate plane separated by the x-axes and y-axes
10. the horizontal number line on a coordinate plane
15. a set of numbers and their opposites