All Algebra II Resources
Example Questions
Example Question #1 : Transformations
If , what is ?
It is the same as .
It is the parabola reflected across the x-axis.
It is the parabola shifted to the right by 1.
It is the function.
It is the parabola reflected across the y-axis.
It is the parabola reflected across the x-axis.
It helps to evaluate the expression algebraically.
. Any time you multiply a function by a -1, you reflect it over the x axis. It helps to graph for verification.
This is the graph of
and this is the graph of
Example Question #10 : Transformations
If , what is ?
It is the graph shifted 1 to the right.
It is the graph reflected across the y-axis.
It is the graph reflected across the x-axis.
It is the graph rotated about the origin.
It is the graph.
It is the graph reflected across the y-axis.
Algebraically, .
This is a reflection across the y axis.
This is the graph of
And this is the graph of
Example Question #11 : Transformations
Transformations
Where will the point be located after the following transformations?
- Reflection about the x-axis
- Translation up 3
- Translation right 4
Where will the point be located after the following transformations?
- Reflection about the x-axis results in multiplying the y value by negative one thus .
- Translation up 3, means to add three to the y values which results in .
- Translation right 4, means to add four to the x value which will result in .
Example Question #12 : Transformations
Find the equation of the linear function obtained by shifting the following linear function along the x-axis 3 units to the left. State the y-intercept of .
y-intercept
y-intercept
y-intercept
y-intercept
y-intercept
y-intercept
The transformation for a left shift along the x-axis for requires we add to the argument of the function .
The y-intercept of the linear function is .
Example Question #11 : Transformations
If the function is linear and the function is quadratic, then the function is?
not a function
quadratic
a linear quadratic function
linear function
higher order polynomial function
quadratic
The linear function will have the form,
Where is the y-intercept and is the slope; both are constant.
The quadratic function will have the form,
We are given that the function is defined,
we obtain another function that is also a quadratic function since and are constants. Therefore, is quadratic.
Example Question #12 : Transformations
Reflect across the x-axis, then reflect across , and then shift this line up five units. What is the new equation?
Reflect across the x-axis will turn the equation to:
If we then reflect across , the equation will become:
Shifting this line up five units means that we will add five to this equation.
The equation after all the transformations is:
The answer is:
Example Question #191 : Functions And Graphs
Reflect the line across the line , and then reflect again across the line . What is the new equation of this horizontal line?
The distance between and is three units. If the line is reflected across , this means that the new line will also be three units away from .
The equation of the line after this reflection is:
If this line is reflected again across the line , both lines are six units apart, and the reflection would mean that the line below line is also six units apart.
Subtract six from line .
The equation of the line after the transformations is:
The answer is:
Example Question #15 : Transformations
If the function is shifted down two units and left four units, what is the new y-intercept?
If the graph was shifted two units down, only the y-intercept will change, and will decrease by two.
The new equation is:
If the graph was shifted left four units, the root will shift four units to the left, and the will need to be replaced with .
The new y-intercept will be .
Example Question #13 : Transformations
Reflect the line across , and shift the line down three units. What is the new equation?
The equations with an existing variable is incorrect because they either represent lines with slopes or vertical lines.
After the line is reflected across , the line becomes .
Shifting this line down three units mean that the line will have a vertical translation down three.
Subtract the equation by three.
The result is:
Example Question #14 : Transformations
Give the equation of the vertical asymptote of the graph of the equation .
The graph of has no vertical asymptote.
The graph of has no vertical asymptote.
Define . As an exponential function, this has a graph that has no vertical asymptote, as is defined for all real values of . In terms of :
,
The graph of is a transformation of that of - a horizontal shift ( ), a vertical stretch ( ), and a vertical shift ( ) of the graph of ; none of these transformations changes the status of the function as one whose graph has no vertical asymptote.
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