4.2.2 Proportional Relationships with Tables and Graphs

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you find the probability of an event?

Back

The probability of an event is found by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the formula for probability as a fraction?

Back

P(event) = Number of favorable outcomes / Total number of outcomes.

Front

Convert the fraction 3/10 to a decimal.

Back

0.3

Front

Convert the fraction 3/10 to a percent.

Back

30%.

Front

What does a graph of a proportional relationship look like?

Back

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

Front

If a bag contains 10 marbles, and 3 are green, what is the probability of picking a green marble?

Back

P(green) = 3/10.

Front

What is the total number of outcomes if a bag contains 4 brown, 3 green, 2 red, and 1 purple marble?

Back

Total outcomes = 4 + 3 + 2 + 1 = 10.

Front

If the probability of an event is 0.3, what is the probability as a fraction?

Back

3/10.

Front

What is the relationship between fractions, decimals, and percentages?

Back

Fractions, decimals, and percentages are different ways to represent the same value.