Linear Functions Review

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

What is point slope form?

• y = mx + b

• y − y1 = m(x − x1)

• Ax + by = c

• None of these

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade.

• No relationship exists between the number of books students read and their English grades.

What type of correlation best describes the scatter plot shown?

• positive, weak

• positive, strong

• negative, weak

• no correlation

Which example shows CAUSATION? (Which one CAUSED the other to happen?)

• High social media usage and reduced grades.

• Car ran out of gas and being stranded on the side of the road.

• Recess time and number of friends.

• A person's age and what kind of cereal they eat.

Data is collected comparing sales of cars and the age of the salesperson. After analyzing the data, it is determined that the correlation coefficient is 0.19. What does this mean?

• There is no correlation between sales and age.

• There is a strong positive correlation between sales and age.

• There is a strong negative correlation between sales and age.

• There is a weak negative correlation between sales and age.

Which with is the line of best fit?

• A) Black

• B) Orange

• C) Red

• D) Blue

What is slope-intercept form?

• y = mx + b

• y − y1 = m(x−x1)

• ax + by = c

• None of these

Which example shows CAUSATION? (Which one CAUSED the other to happen.)

• High social media usage and reduced grades.

• Car ran out of gas and being stranded on the side of the road.

• Recess time and number of friends.