The table shows several points on the graph of a linear function. Work in order, to see connections between the slope formula, distance formula, midpoint formula, and linear functions.

x..........................y
0........................-6
1........................-3
2.........................0
3........................ 3
4.........................6
5........................ 9
6.......................12

Make a conjecture by filling in the blank: If we use any two points on a line to find its slope, we find that the slope is_________________in all cases.