Across
1
Steepness of a line
4
Proven mathematical statement
6
Number with digits after a point
7
Number that divides evenly into another
8
Sum divided by count
9
Value that does not change
12
U-shaped curve of a quadratic function
Down
1
System of ordered marks for measuring
2
Space between two intersecting lines
3
Lines that never intersect
5
Divisible by two
10
Reference line in a graph
11
Power to which a number is raised