Across
1
Number divisible only by 1 and itself
4
Closed shape with straight sides
5
System of ordered marks for measuring
7
Space between two intersecting lines
8
U-shaped curve of a quadratic function
9
Value that does not change
10
Reference line in a graph
Down
2
Visual representation of data
3
Single numeral from 0 to 9
5
Steepness of a line
6
Number with digits after a point
11
Difference between highest and lowest values