Direct and inverse proportion

y + x = k

y - x = k

xy = k

$\frac{y}{x}=k$

y + x = k

y - x = k

xy = k

$\frac{y}{x}=k$

It does not include (0,0)

The product of the variables is not constant

The quotient of the variables is not constant

Because I say so

To prepare a loaf of banana bread a recipe says you need to put 1 tablespoon to the dough for each 2 bananas you use.

To drive from Santiago to Antofagasta you need to cover 1335 km in the Ruta 5. The average speed (v) at which you drive in this stretch and the time (t) you take to arrive at Antofagasta

The total cost C for Q units of a certain product at a fixed unit price

The unit price P and the total cost C of a fixed number of units of a certain product

To prepare a loaf of banana bread a recipe says you need to put 1 tablespoon to the dough for each 2 bananas you use.

To drive from Santiago to Antofagasta you need to cover 1335 km in the Ruta 5. The average speed (v) at which you drive in this stretch v the time (t) you take to arrive at Antofagasta.

The total cost C for Q units of a certain product at a fixed unit price

The unit price P and the total cost C of a fixed number of units of a certain product

To prepare a loaf of banana bread a recipe says you need to put 1 tablespoon to the dough for each 2 bananas you use.

To drive from Santiago to Antofagasta you need to cover 1335 km in the Ruta 5. The average speed (v) at which you drive in this stretch and the time (t) you take to arrive at Antofagasta

The total cost C for Q units of a certain product at a fixed unit price

The unit price P and the total cost C of a fixed number of units of a certain product

1335 km

92 km/h

14.5 hours

5