Final answer:
For any two points on a line with a negative slope, the change in the y-values and change in the x-values will both be negative.
Step-by-step explanation:
A negative slope means that when x increases, y decreases, or when x decreases, y increases. In other words, the change in the y-values is negative for a positive change in x, and vice versa. Therefore, for any two points on a line with a negative slope, the change in the y-values and change in the x-values will both be negative.