Grade: Grade 8 Subject: Mathematics Unit: Data Analysis SAT: ProblemSolving+DataAnalysis ACT: Math

Scatter Plots

📖 Learn

This lesson covers key concepts for Scatter Plots. Content will include explanations, definitions, and foundational knowledge.

Detailed lesson content coming soon. This page demonstrates the structure and navigation of the Open Textbooks platform.

Work through these examples to see the concepts in action.

Example problems and worked solutions will appear here.

Test your understanding with these practice questions.

0/4 correct

Question 1

If y = 3x represents a proportional relationship, what is the constant of proportionality?

A 1

B 3

C x

D y

Explanation: In y = kx, the constant of proportionality k is the coefficient of x. Here k = 3.

Question 2

A recipe uses 2 cups of flour for every 3 cups of sugar. If you use 6 cups of flour, how many cups of sugar do you need?

A 4 cups

B 9 cups

C 12 cups

D 8 cups

Explanation: Set up the proportion: 2/3 = 6/x. Cross multiply: 2x = 18, so x = 9 cups.

Question 3

Which equation represents a proportional relationship?

A y = 2x + 1

B y = 5x

C y = x²

D y = 3

Explanation: A proportional relationship has the form y = kx where k is a constant. Only y = 5x fits this form.

Question 4

The table shows x: 2, 4, 6 and y: 8, 16, 24. What is the constant of proportionality?

A 2

B 4

C 6

D 8

Explanation: Divide any y-value by its corresponding x-value: 8÷2 = 4, 16÷4 = 4, 24÷6 = 4. The constant is 4.

Test yourself with these review questions.

Self-assessment questions will appear here.