Honors Bell Ringer - Ratios & Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

What is the origin in a coordinate plane?

Back

The origin is the point where the x-axis and y-axis intersect, represented by the ordered pair (0,0).

Front

If 1/2 hour uses 1/9 of a battery, how long to use the entire battery?

Back

4-1/2 hours.

Front

What does it mean if a graph shows a proportional relationship?

Back

It means that as one quantity increases, the other quantity increases at a constant rate.

Front

What is a non-proportional relationship?

Back

A non-proportional relationship does not maintain a constant ratio between two quantities.

Front

How can you identify a proportional table?

Back

A proportional table will have values that maintain a constant ratio between the x and y values.

Front

What is the formula for finding a ratio?

Back

The formula for finding a ratio is: Ratio = Part/Whole.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.