8th Unit 3 Test Review: Linear Relationships

8th Unit 3 Test Review: Linear Relationships

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 relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph. It can be described by a linear equation of the form y = mx + b, where m is the slope and b is the y-intercept.

2.

FLASHCARD QUESTION

Front

What does the slope of a line represent?

Back

The slope of a line represents the rate of change of the dependent variable (y) with respect to the independent variable (x). It indicates how much y changes for a one-unit increase in x.

3.

FLASHCARD QUESTION

Front

How do you calculate the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1).

4.

FLASHCARD QUESTION

Front

What is the y-intercept in a linear equation?

Back

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

5.

FLASHCARD QUESTION

Front

Write the equation for a linear relationship where the y-intercept is 20 and the slope is 5.

Back

y = 5x + 20.

6.

FLASHCARD QUESTION

Front

If a streaming service costs $20 to sign up and $5 per month, what is the total cost after x months?

Back

Total cost = 20 + 5x.

7.

FLASHCARD QUESTION

Front

What does it mean for a graph to increase the fastest?

Back

A graph increases the fastest when it has the steepest slope, meaning that for each unit increase in x, y increases by a larger amount compared to other graphs.

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