Open Middle®

Three Points on a Line

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find three points on the same line and the slope.

1. Consider making a table of values to help organize your thinking.
2. Remember we can view slope as a constant rate of change.

(0,3)
(4,5)
(8,7)
m = ½

(0,5)
(4,7)
(8,9)
m =½

(3,0)
(5,4)
(7,8)
m = 2/1

(5,0)
(7,4)
(9,8)
m = 2/1

Directions: Using the digits 0 to 9, at most one time each, place a digit …