Ratios and Proportions CSA Review

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

What does it mean for a graph to be proportional?

Back

A graph is proportional if it is a straight line that passes through the origin (0,0).

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant 'k' in the equation y = kx, representing the ratio of y to x.

Front

How do you write an equation for a proportional relationship?

Back

The equation for a proportional relationship can be written in the form y = kx, where k is the constant of proportionality.

Front

If Kenley and Tania painted 120 square feet with 2/3 of a gallon, how many square feet can they paint with 1 gallon?

Back

180 square feet.

Front

If a graph shows the equation y = 10x, what is the constant of proportionality?

Back

The constant of proportionality is 10.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

How can you determine if two ratios are equivalent?

Back

Two ratios are equivalent if their cross products are equal.

Front

What is the formula to find the constant of proportionality from a table of values?

Back

k = y/x, where y is the output and x is the input.