Day 2 Practice

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as a fraction of two integers, where the denominator is not zero. Examples include 1/2, -3, and 0.75.

Front

What are irrational numbers?

Back

Irrational numbers are numbers that cannot be expressed as a simple fraction. They have non-repeating, non-terminating decimal expansions. Examples include √2 and π.

Front

What is a Venn diagram?

Back

A Venn diagram is a visual representation used to show the relationships between different sets. It uses overlapping circles to illustrate how the sets intersect.

Front

How do you determine if a graph represents a function?

Back

A graph represents a function if every vertical line intersects the graph at most once. This is known as the vertical line test.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a Cartesian plane.

Front

What does positive correlation mean in a scatter plot?

Back

Positive correlation means that as one variable increases, the other variable also tends to increase. The points on the scatter plot slope upwards.

Front

What does negative correlation mean in a scatter plot?

Back

Negative correlation means that as one variable increases, the other variable tends to decrease. The points on the scatter plot slope downwards.

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input. It can be represented as a set of ordered pairs, a graph, or an equation.

Front

What is the difference between a function and not a function?

Back

A function has one output for each input, while a relation that assigns multiple outputs to a single input is not a function.

Front

How do you order numbers from least to greatest?

Back

To order numbers from least to greatest, compare their values and arrange them in ascending order. For example, √23, 5, 6, 43% ordered is 43%, √23, 5, 6.