'As the price of petrol increases, fewer people buy cars that are petrol guzzlers.' A graph showing this relationship would
A) be a vertical line.
B) have a direct relationship.
C) be a horizontal line.
D) have a negative slope.
E) have a positive relationship.

Question

Quizplus · Accepted Answer

This relationship is represented by a negative slope, indicating that as the price of petrol increases (X-axis), the number of cars bought that are petrol guzzlers decreases (Y-axis). As one variable increases, the other decreases in a linear fashion.

'As the Price of Petrol Increases, Fewer People Buy Cars