Algebra 1 Team Decathlon -- Event #8 Pole Vault

Front

What is direct variation?

Back

Direct variation is a relationship between two variables where one variable is a constant multiple of the other. It can be expressed as y = kx, where k is a non-zero constant.

Front

If y varies directly as x and k = 9, what is the equation?

Back

Front

What is inverse variation?

Back

Front

If 15 miles is represented by 3 centimeters, how many centimeters represent 135 miles?

Back

27 cm.

Front

What is the constant of variation in direct variation?

Back

The constant of variation is the non-zero constant k in the equation y = kx.

Front

How do you determine if a table represents direct variation?

Back

A table represents direct variation if the ratio of y to x is constant for all pairs of values.

Front

What happens to the time taken as the speed of a train increases?

Back

As the speed of a train increases, the time taken to reach the destination decreases, indicating inverse variation.

Front

If y = 3 when x = 1, what is the constant of variation if y varies directly as x?

Back

The constant of variation k is 3.

Front

What is the formula for direct variation?

Back

The formula for direct variation is y = kx.

Front

What is the relationship between distance and time in direct variation?

Back

In direct variation, as one quantity increases, the other also increases.