2.
X, Y number lines intersect. (0,0)
3.
Numbers showing the same "Rule"
4.
Numbers next to each other in a pattern
5.
Numbers sharing the same rule
6.
A unknown number using a letter
7.
Number phrase having numbers & operations
8.
(x,y)exact location of a point
10.
A number sentence with an = sign
13.
Length x width time height, 3-D
14.
Side + Side + side + side
15.
X, Y axis forming a grid
17.
Solving, finding value
18.
A special equation that shows a relationship
19.
Parentheses, brackets, braces
