Final answer:
The equation y = -2x + 88 represents a linear relationship between two variables, x and y. Option c, which describes Priscilla's grading situation, could be represented by this equation.
Step-by-step explanation:
The equation y = -2x + 88 represents a linear relationship between two variables, x and y. In this equation, x represents the input variable and y represents the output variable. The coefficient of -2 in front of the x term tells us that for each increase of 1 in x, y decreases by 2. The y-intercept of 88 tells us that when x is 0, y is 88.
From the given options, the situation that could be represented by this equation is option c. Priscilla is grading her homework and has an 88 so far. She will lose 2 points for each additional question she misses. In this situation, the x variable represents the number of additional questions missed, and the y variable represents Priscilla's overall grade.