Unit 2 Review

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you find the value of y in a proportional relationship when given x?

Back

To find the value of y, use the constant ratio (k) from the relationship, where y = kx.

Front

What is the equation of a proportional relationship?

Back

The equation of a proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

What does the constant of proportionality represent?

Back

The constant of proportionality (k) represents the ratio between the two quantities in a proportional relationship.

Front

If y = (1/3)a, what is the value of y when a = 9?

Back

y = (1/3) * 9 = 3.

Front

What is the significance of the equation 1.08p = t in terms of proportional relationships?

Back

This equation shows that the total cost (t) is directly proportional to the price (p) with a constant of proportionality of 1.08.

Front

How can you determine if a relationship is proportional from a table of values?

Back

A relationship is proportional if the ratios of corresponding values are constant.

Front

What is the formula to calculate speed?

Back

Speed = Distance / Time.

Front

If Lin biked 1.5 kilometers in 5 minutes, what was her speed in kilometers per minute?

Back

Speed = 1.5 km / 5 min = 0.3 km/min.

Front

If Andre biked 2 kilometers in 8 minutes, what was his speed in kilometers per minute?

Back

Speed = 2 km / 8 min = 0.25 km/min.