Lesson 3 (Linear Functions)

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# Lesson 3 (Linear Functions) - PowerPoint PPT Presentation

Review : What is a linear function? What does it look like?. Linear functions are in the form of y= mx+b . They form a straight line when graphed. The x variable cannot have an exponent other than 1 and it cannot be on the bottom of a fraction. Lesson 3 (Linear Functions). Examples.

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Review: What is a linear function? What does it look like?

• Linear functions are in the form of y=mx+b.
• They form a straight line when graphed.
• The x variable cannot have an exponent other than 1 and it cannot be on the bottom of a fraction.
Lesson 3 (Linear Functions)

Examples

• y=2x+4
• d=4.5t
• y=5x2
• y=1/x+6
Lesson 3 (Linear Functions)
• Is the function represented by the following table linear?
Lesson 3 (Linear Functions)

Examples

• Does the equation 6x + 5y = 4 represent the same linear function as the table?
• Does the equation x – 2y = 4 represent the same linear function as the table?
Lesson 3 (Linear Functions)

Examples:

• Decide whether each of the following situations would represent a linear function:
• The perimeter of a regular pentagon with a side length of x units.
• The volume of a cube with a edge of x units.
• The value of x nickels and x quarters.
• The amount of a 10% commission earned on sales of x dollars.
Lesson 3 (Linear Functions)