7th 2 Topic Practice Test

Front

What does the point (0,0) represent in a graph showing the relationship between cups of flour and cookies made?

Back

Zero flour and Zero cookies.

Front

What is a proportional relationship?

Back

A relationship where two quantities maintain a constant ratio.

Front

If x and y have a proportional relationship, how do you find the constant of proportionality?

Back

Divide y by x (y/x).

Front

A robot can complete 8 tasks in 5/6 of an hour. How do you calculate how many tasks it can complete in 12 hours?

Back

Use the unit rate: (8 tasks) / (5/6 hours) = 9.6 tasks/hour, then multiply by 12 hours.

Front

What is the constant of proportionality if a line goes through the point (3,54)?

Back

18 (calculated as 54/3).

Front

What does the point (3,54) represent in a graph showing the relationship between cups of flour and cookies made?

Back

3 cups flour making 54 cookies.

Front

How do you determine if two quantities are proportional from a graph?

Back

Check if the line is straight and passes through the origin.

Front

What is the formula for finding the constant of proportionality in a direct variation?

Back

k = y/x, where k is the constant of proportionality.

Front

If a baker uses 2 cups of flour to make 36 cookies, what is the constant of proportionality?

Back

18 (36 cookies / 2 cups flour).

Front

What does a slope of a line represent in a graph of a proportional relationship?

Back

The constant of proportionality.