Ratios and Proportions Final Exam Study Guide

Front

What is the formula for a proportional relationship?

Back

y = kx

Front

If the constant of proportionality is 10, which of the following is the correct proportional equation?

Back

y = 10x

Front

Solve for x: 3x = 18

Back

x = 6

Front

Find the unit rate of 624 calories in 3 servings.

Back

208 calories per serving

Front

Simplify the complex fraction: 9/72

Back

1/8

Front

What is a ratio?

Back

A comparison of two quantities by division.

Front

What is a proportion?

Back

An equation that states that two ratios are equal.

Front

How do you find the constant of proportionality?

Back

Divide the dependent variable by the independent variable.

Front

What is the unit rate of 150 miles in 3 hours?

Back

50 miles per hour.

Front

If y varies directly with x, and y = 20 when x = 4, what is the constant of proportionality?

Back

5