Practice problem
Which of the following express an inversely proportional relationship between xxx and yyy?
yx=5\frac{y}{x}=5xy=5
y=−x−4y=-x-4y=−x−4
xy=10\frac{x}{y}=10yx=10
xy=12xy=\frac{1}{2}xy=21
Type a concept, like “slope” or “photosynthesis”.