Across
1
U-shaped curve of a quadratic function
3
Part of a line with two endpoints
5
Power to which a number is raised
6
Difference between highest and lowest values
10
The number representing nothing
Down
2
Mathematical statement of equality
3
Steepness of a line
4
Number less than zero
7
Mathematical rule or equation
8
Sum divided by count
9
Rectangle with four equal sides
11
Rectangular array of numbers