1st Semester 8th Grade Review

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, y).

Front

How do you estimate the square root of a number?

Back

To estimate the square root, find two perfect squares it lies between and determine a value between them.

Front

What is a function in mathematics?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

What does it mean if a relation is not a function?

Back

It means that at least one x-value is paired with more than one y-value.

Front

How do you identify the y-intercept from a graph?

Back

Look for the point where the line intersects the y-axis.

Front

What is the approximate square root of 20?

Back

The approximate square root of 20 is about 4.5.

Front

What is the difference between a function and a relation?

Back

A relation can have multiple outputs for a single input, while a function cannot.

Front

How can you tell if a set of ordered pairs represents a function?

Back

Check if any x-value is repeated with different y-values.

Front

What is the square root of 16?

Back

The square root of 16 is 4.

Front

What does it mean for a graph to be linear?

Back

A linear graph forms a straight line and represents a linear function.