proportions

Front

What is a proportion?

Back

A proportion is when two ratios are equivalent and show the same value.

Front

What is the Constant of Proportionality?

Back

The Constant of Proportionality (k) is defined as k = y/x, where y is the dependent variable and x is the independent variable.

Front

If Gold's Gym paid $250 for each TV, how many did they buy if they spent $8750?

Back

35 TVs.

Front

Find the slope of the line that passes through the points (2, 4) and (6, 12).

Back

The slope is 2.

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship or value.

Front

How do you find the Constant of Proportionality from a table of values?

Back

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

Front

What is the formula for slope?

Back

The formula for slope (m) is m = (y2 - y1) / (x2 - x1).

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

How can you determine if two ratios form a proportion?

Back

Cross-multiply the ratios; if the products are equal, they form a proportion.

Front

What is an example of a real-life proportion?

Back

If 4 apples cost $2, then 8 apples would cost $4.