Interpreting Slope and Y-Intercept from Scatter Plots

Interpreting Slope and Y-Intercept from Scatter Plots

Assessment

Interactive Video

Mathematics

8th - 12th Grade

Hard

Created by

Aiden Montgomery

FREE Resource

The video tutorial explains how to interpret the slope and intercept of a linear model. It provides examples using scatter plots to demonstrate how changes in one variable affect another. The tutorial covers various scenarios, such as farmworkers' data, calories burned during exercise, fuel efficiency, and test scores. It also introduces new examples involving wrinkles and age, and TV hours and test scores, to further illustrate the concepts. The video concludes with a review of the calories burned example.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the general sentence structure used to interpret the slope of a linear model?

As the Y variable increases or decreases, the X variable changes by a certain amount.

As the X variable increases or decreases, the Y variable changes by a certain amount.

The Y variable is always constant while the X variable changes.

The X variable is always constant while the Y variable changes.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the farmworkers example, what does the slope of -13/37 indicate?

For every 13 years, the percent decreased by 37.

For every 13 years, the percent increased by 37.

For every 37 years, the percent increased by 13.

For every 37 years, the percent decreased by 13.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the slope interpreted in the calories burned example?

For every 95 minutes, 95 calories are burned.

For every 23 minutes, 95 calories are burned.

For every 95 minutes, 23 calories are burned.

For every 23 minutes, 23 calories are burned.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the y-intercept represent in a linear model?

The value of the Y variable when the X variable is zero.

The value of the X variable when the Y variable is zero.

The value of the Y variable when the X variable is at its maximum.

The value of the X variable when the Y variable is at its maximum.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the fuel efficiency example, why does the y-intercept not make practical sense?

Because the x-intercept is always positive.

Because a car cannot weigh zero pounds.

Because the y-intercept is always negative.

Because fuel efficiency cannot be measured.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the slope of 7/9 indicate in the age and wrinkles example?

For every 9 years, you get 7 wrinkles.

For every 1 year, you get 0.7 wrinkles.

For every 1 year, you get 7 wrinkles.

For every 7 years, you get 9 wrinkles.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the y-intercept in the age and wrinkles example?

0 wrinkles at age 13.

13 wrinkles at age 13.

13 wrinkles at age 0.

0 wrinkles at age 0.

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