Rational or Reciprocal Function Transformations
The rational or reciprocal function is y = 1/x , denoted by function g.
The transformed basic function is y = 1/(x - h) + k
Note: The 'slider' feature on the x-y coordinate plane can be used to change the h, and k values
for the following exercises. To do so, place the cursor and hold it on the dot of the slider and
slide it to the desired m and b values.
To move the slider to a different location on the x-y plane, place the cursor and hold it on the line
of the slider and move it to the desired location.
Note: You can zoom in or out with the mouse.
Perform the following rational function transformation:
Vertical shift of 3 units up.
The new function is y=1/x +3 , denoted by function f.
Set h=0 since there is no horizontal shift
Set k=3 which represents the vertical shift of 3 units up.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Vertical shift of 3 units down.
The new function is y=1/x - 3 , denoted by function f.
Set h=0 since there is no horizontal shift
Set k= - 3 which represents the vertical shift of 3 units down.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Horizontal shift of 3 units to the right.
The new function i y=1/(x - 3) , denoted by function f.
Set h=3 which represents the horizontal shift of 3 units to the right.
Set k=0 since there is not vertical shift.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Horizontal shift of 3 units to the left.
The new function is y=1/(x+3) , denoted by function f.
Set h=- 3 which represents the horizontal shift of 3 units to the left.
Set k=0 since there is not vertical shift.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Vertical shift of 3 units up plus a horizontal shift of 3 units to the right.
New function: y = 1/(x-3) +3 , denoted by function f.
Set h=3 which represents the horizontal shift of 3 units to the right.
Set k=3 which represents the vertical shift of 3 units up.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Vertical shift of 3 units down plus a horizontal shift of 3 units to the left.
New function: y = 1/(x+3) - 3 , denoted by function f.
Set h=- 3 which represents the horizontal shift of 3 units to the left.
Set k=- 3 which represents the vertical shift of 3 units down.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Vertical shift of 3 units down plus a horizontal shift of 3 units to the right.
New function: y = 1/(x - 3) - 3, denoted by function f.
Set h= 3 which represents the horizontal shift of 3 units to the right.
Set k=- 3 which represents the vertical shift of 3 units down.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Vertical shift of 3 units up plus a horizontal shift of 3 units to the left.
New function: y = 1/(x+3) + 3, denoted by function f.
Set h= - 3 which represents the horizontal shift of 3 units to the left.
Set k= 3 which represents the vertical shift of 3 units up.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Reflection over the x-axis.
New function: y = - 1/x , denoted by function f.
Place a negative in front of the entire equation.
Set h= 0 since there is no horizontal shift.
Set k= 0 since there is no vertical shift.
Observe the transformation of the rational function.
Perform the following rational function transformation:
Reflection over the y-axis.
New function: y = 1/(-x ) , denoted by function f.
Place a negative in front of the variable x.
Set h= 0 since there is no horizontal shift.
Set k= 0 since there is no vertical shift.
Observe the transformation of the rational function.
Repeat this exercise as many times as desired until concept is mastered.
Use different values of h and k.