# Which of the ordered pairs forms a linear relationship: (-2,5) (-1,2) (0,1) (1,2)? Why?

##### 1 Answer

Jan 6, 2016

P1 and P4 define a line segment with the same slope as the line segment defined by P2 and P3

#### Explanation:

To compare the possible slopes with 4 points, one should determine the slopes for P1P2, P1P3, P1P4, P2P3, P2P4 and P3P4.

To determine a slope defined by two points: