Ms. Rodriguez purchased markers to use on her class whiteboard. She bought a total of 16 markers and three times as many blue markers as red markers. Set up the two equations that can be used to find the number of markers of each color that Ms. Rodriguez purchased.

Let constraint 1 refer to the equation that represents the total number of markers.
Let constraint 2 refer to the equation that describes the ratio of the number of blue markers to red markers.
Only constraint would be met if Ms. Rodriguez purchased 3 red markers and 9 blue markers.

Only constraint would be met if Ms. Rodriguez purchased 6 red markers and 10 blue markers.