Units 3 & 4 Review

Front

What is the speed of a dolphin in kilometers per hour?

Back

25 kilometers per hour.

Front

What does the equation y = x + 25 represent in the context of a dolphin's travel?

Back

It shows the distance a dolphin can travel at a speed of 25 kilometers per hour, where x is the time in hours.

Front

What is the constant of proportionality in the context of a rate?

Back

It is the ratio that describes how one quantity changes in relation to another, such as $9 per hour.

Front

How do you calculate the rate of change from a table of values?

Back

The rate of change is found by determining the difference in the y-values divided by the difference in the x-values.

Front

What is the value of k in the equation y = kx if y = 7.5 and x = 3?

Back

k = 2.50.

Front

In the equation y = 14x, what does the number 14 represent?

Back

The constant of proportionality.

Front

What is the formula to find distance when speed and time are known?

Back

Distance = Speed × Time.

Front

If a dolphin travels for 5 hours at 25 kilometers per hour, how far does it travel?

Back

Distance = 25 km/h × 5 h = 125 kilometers.

Front

What is a proportional relationship?

Back

A relationship where two quantities maintain a constant ratio.

Front

How can you identify a constant rate of change in a table?

Back

If the differences between consecutive y-values divided by the differences in x-values are the same.