Algebra 2 2-2 Complete Lesson: Direct Variation

Problem 4 Got It? The number of Calories varies directly with the mass of cheese. If 50 grams of cheese contain 200 Calories, how many Calories are in 70 grams of cheese?

Problem 4 Got It? Reasoning: If y² varies directly with x², does that mean y must vary directly with x?

Problem 4 Got It? Reasoning: Explain your response to the previous item.

Problem 5 Got It? Graph each direct variation equation on the canvas.

Vocabulary: Explain what it means for two variables to be directly related?

Example: Give an example of a function that represents a direct variation.

Review Lesson 2-1: Identify the graph of each relation.

Review Lesson 1-3: Evaluate the expression for x = -2.

Respond with only a number. Use decimal form if necessary.

Review Lesson 1-3: Evaluate the expression for x = 0.

Respond with only a number. Use decimal form if necessary.

Review Lesson 1-3: Evaluate the expression for x = 1.

Respond with only a number. Use decimal form if necessary.

Review Lesson 1-3: Evaluate the expression for x = 4.

Respond with only a number. Use decimal form if necessary.

Vocabulary Review: Identify the ratio that is NOT equal to the other three.

Vocabulary Review: Match each proportion with its solution.

Use Your Vocabulary: Complete each sentence on the right with the correct word from the left.

Notes: Take a clear picture or screenshot of your Cornell notes for this lesson. Upload it to the canvas. Zoom and pan as needed.

For a refresher on the Cornell note-taking system, click here.

Reflection: Math Success

Solve It! You are building a roof. You mark off four equal intervals from point A to point B. Then you place vertical posts as shown in the diagram. What are the heights of the four vertical posts? Select all that apply.