Math 8 - U3L1/2 - Constant of Proportionality Exit Card - 2024

Front

What is the constant of proportionality in the equation y = ½x?

Back

1/2

Front

Define the constant of proportionality.

Back

The constant of proportionality is the constant factor that relates two proportional quantities, often represented as k in the equation y = kx.

Front

If y = 3x, what is the constant of proportionality?

Back

3

Front

What does a constant of proportionality of 4 mean in a real-world context?

Back

It means that for every unit increase in x, y increases by 4 units.

Front

How can you find the constant of proportionality from a table of values?

Back

By dividing the value of y by the corresponding value of x for any pair of values.

Front

If a car travels 60 miles in 1 hour, what is the constant of proportionality for distance over time?

Back

60 miles per hour.

Front

What is the unit rate in the context of proportional relationships?

Back

The unit rate is the constant of proportionality expressed as a quantity per one unit of another quantity.

Front

In the equation y = kx, what does k represent?

Back

k represents the constant of proportionality.

Front

If a recipe requires 2 cups of flour for every 3 cups of sugar, what is the constant of proportionality for flour to sugar?

Back

2/3.

Front

How do you graph a proportional relationship?

Back

By plotting points that represent the relationship and drawing a straight line through the origin.