The situation is 15 yard gain.
The word gain indicates positive value.
Thus, the integer that represents the given situation is “+15” and the integer is
15 units from zero.
Locate the integer “+15” on the number line.
The graph is,
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")