3.5 QC-Corrections Grade 8

Front

What does it mean for triangles ABC and DEF to be similar?

Back

Triangles ABC and DEF are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is the relationship between the slopes of similar triangles?

Back

The slope of triangle ABC is EQUAL TO the slope of triangle DEF.

Front

What is a function in mathematics?

Back

A function is a relation where each input has exactly one output.

Front

How can you determine if a table represents a function?

Back

A table represents a function if no two inputs (x-values) are the same.

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables using dots to represent data points.

Front

What does a linear relationship in a scatterplot look like?

Back

A linear relationship in a scatterplot appears as a straight line or a pattern that can be approximated by a straight line.

Front

What does it mean if a scatterplot does NOT suggest a linear relationship?

Back

It means that the data points do not form a straight line and may show a curve or no clear pattern.

Front

What is the significance of the slope in a linear relationship?

Back

The slope indicates the rate of change between the two variables; a positive slope means as one variable increases, the other also increases.

Front

What is an example of a negative correlation?

Back

As the number of hours studied increases, the number of errors made on tests decreases.

Front

What is the purpose of studying functions in mathematics?

Back

Studying functions helps us understand how different quantities are related and how changes in one quantity affect another.