The slope of the linear graph represents the rate at which Jamal's final score changes for each question he gets wrong. In other words, it shows how much his score decreases or increases with each incorrect answer.
To understand this concept, let's look at an example. Suppose the slope of the line is -2. This means that for every one question Jamal gets wrong, his final score decreases by 2 points. So, if he gets 3 questions wrong, his score will decrease by 6 points (-2 × 3 = -6).
On the other hand, if the slope were positive, such as +3, it would mean that for every incorrect answer, Jamal's score would increase by 3 points. So, if he gets 2 questions wrong, his score would increase by 6 points (+3 × 2 = +6).
In summary, the slope of the line in the linear graph represents the rate of change of Jamal's final score based on the number of questions he gets wrong. It provides insight into how much his score is affected by each incorrect answer, whether it decreases or increases.