Unit 3 Fix It

Unit 3 Fix It

Assessment

Flashcard

Mathematics

8th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a linear regression equation?

Back

A linear regression equation is a mathematical formula that describes the relationship between two variables, typically in the form y = mx + b, where m is the slope and b is the y-intercept.

2.

FLASHCARD QUESTION

Front

How do you predict values using a linear regression equation?

Back

To predict values, substitute the known value of x into the linear regression equation and solve for y.

3.

FLASHCARD QUESTION

Front

What does the slope in a linear regression equation represent?

Back

The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x).

4.

FLASHCARD QUESTION

Front

What is the y-intercept in a linear regression equation?

Back

The y-intercept is the value of y when x is 0, indicating where the line crosses the y-axis.

5.

FLASHCARD QUESTION

Front

How can you use a linear equation to make predictions?

Back

By substituting the value of the independent variable into the equation, you can calculate the expected value of the dependent variable.

6.

FLASHCARD QUESTION

Front

What is the significance of the equation y = 3.14x + 3.52 in predicting chess match wins?

Back

This equation indicates that for every additional hour of practice (x), the team is expected to win approximately 3.14 more matches, plus a base of 3.52 matches.

7.

FLASHCARD QUESTION

Front

If a team practices for 4.5 hours, how do you calculate the expected wins using the equation y = 3.14x + 3.52?

Back

Substitute x = 4.5 into the equation: y = 3.14(4.5) + 3.52 = about 18.

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