Algebra II : Linear Functions

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #71 : Linear Functions

Shift the line:   up two units and left five units.  What is the new equation?

Possible Answers:

Correct answer:

Explanation:

Shifting the line up two units will add two to the y-intercept.

Shifting the line left five units will indicate that the x-variable will be changed to:

Replace this quantity into the equation.

Simplify this equation.

The answer is:  

Example Question #72 : Linear Functions

Shift the equation  left eight units.  What's the new equation?

Possible Answers:

Correct answer:

Explanation:

If a function is shifted left eight units, we will need to replace the  term with the quantity .

Use the distributive property to simplify the binomial.

Solve for y.  Subtract  and  on both sides.

Simplify both sides.

The answer is:  

Example Question #73 : Linear Functions

Translate the following function left three units:    Write the new equation.

Possible Answers:

Correct answer:

Explanation:

When the graph is shifted three units to the left, the x-variable of the equation will need to be replaced with .

Replace the x term with the new term.

Simplify this equation.

Combine like-terms.

The answer is:  

Example Question #74 : Linear Functions

Translate  down two units.  What's the new equation?

Possible Answers:

Correct answer:

Explanation:

Rewrite the equation, , in slope intercept form.

Subtract  on both sides.

Divide by six on both sides.

Simplify both sides.

The equation in slope intercept form is:  

Shifting the function down by two units mean that the y-intercept will be subtracted by two.

The answer is:  

Example Question #21 : Transformations Of Linear Functions

Shift the equation  left five units.  What is the new equation?

Possible Answers:

Correct answer:

Explanation:

The graph translated five units to the left will require the x-variable to be replaced with .

Replace the term.

Simplify by distribution.

The equation of the new line is:  

Example Question #76 : Linear Functions

Shift  down four units.  Determine the new equation.

Possible Answers:

Correct answer:

Explanation:

Convert the equation in standard form to slope-intercept form, .

Add  on both sides.

Add one on both sides.

The equation becomes:  

Shifting this equation down four units means that the y-intercept must be subtracted four units.

The answer is:  

Example Question #77 : Linear Functions

Shift  up two units and left two units.  What is the new equation?

Possible Answers:

Correct answer:

Explanation:

Apply the vertical transformation.  Shifting up two units will add two to the y-intercept.

Shifting the graph two units to the left will require a replacement of the x-variable with .

Simplify this equation.

The answer is:  

Example Question #78 : Linear Functions

Shift the equation  right four units.  What's the new equation?

Possible Answers:

Correct answer:

Explanation:

A translation to the right four units will require the x-variable to be replaced with .

Rewrite the equation.

Simplify the binomial by distribution.

The answer is:  

Example Question #79 : Linear Functions

Shift the equation  left five units.  What is the new equation?

Possible Answers:

Correct answer:

Explanation:

If a linear function is shifted left five units, the x-variable will need to be replaced with .  Replace the term, and simplify the equation.

Distribute the eight through both terms of the binomial.

The answer is:  

Example Question #31 : Transformations Of Linear Functions

Shift the equation  up three units and left six units.  What is the new equation?

Possible Answers:

Correct answer:

Explanation:

Rewrite the equation in slope intercept form.

Shifting the graph up by three units will require adding three to the y-intercept.

Shifting the graph left six units mean that the x-variable will need to be replaced with:  

The equation becomes:

Simplify this equation.

The answer is:  

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