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Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find new ordered pairs to plot on the graph. Parent Function most simple form of function Absolute Value: y = |x| Quadratic: y=x 2 Square Root: y= x Cubic: y=x 3 Parent Functions with Transformation Options ***Knowing these will help you out*** Quadratic y=x 2 y= a(x h) 2 +k Absolute Value y = |x| y= a|x h| +k Square Root y= x y= a√x h+k Cubic y=x 3 y= a(x h) 3 +k *They all have the same location of the a, h, and k.

Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

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Page 1: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Transformations of FunctionsTransformations allow you to move a graph of a function into a new position w/out having to find new ordered pairs to plot on the graph.

Parent Function ­ most simple form of function

Absolute Value: y = |x| Quadratic: y = x2

Square Root: y =  x Cubic: y = x3

Parent Functions with Transformation Options

 ***Knowing these will help you out***

Quadratic   y = x2 y = a(x ­ h)2 + k

Absolute Value y = |x| y = a|x ­ h| + k

Square Root y =  x y = a√x ­ h + k

Cubic y = x3 y = a(x ­ h)3 + k*They all have the same location of the a, h, and k.

Page 2: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Transformations of Functions

y = f(x) + k shifts f(x) up k unitsy = f(x) ­ k shifts f(x) down k unitsy = f(x ­ h) shifts f(x) right h unitsy = f(x + h) shifts f(x) left h unitsy = ­f(x) reflects f(x) over x­axisy = a(f(x)), a > 1 vertically stretches f(x) y = a(f(x)), 0<a<1 vertically compresses f(x)

Transformations by a/h/k value:

reflected over x­axis ­avertically stretched  a > 1vertically compressed 0 < a < 1

shift left + hshift right ­ h

shift up + kshift down ­ k

h

k

Page 3: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Describe the transformation(s):y = |x + 1|

Describe the transformation(s):y = √x + 2

Page 4: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Describe the transformation(s):y = 3(x + 4)2

Describe the transformation(s):y = |x ­ 5| + 6

Page 5: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Describe the transformation(s):y = 4√x + 1

Describe the transformation(s):y = (x ­ 7)2 ­ 1

Page 6: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Describe the transformation(s):y = ­2(x + 3)2

Describe the transformation(s):y = ­2|x + 3| ­ 4

Page 7: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Describe the transformation(s):y = ­3x3 + 2

Describe the transformation(s):y = ­   |x| ­ 81

4

Page 8: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Remember:

Quadratic y = a (x ­ h)2 + k

Absolute Value y = a | x ­ h | + k

Square Root  y = a √ x ­ h  + k

Cubic y = a (x ­ h)3 + k

Write the function given the transformations.

Square root function that is reflected over the x­axis and shifted right 3 units.

Page 9: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Write the function given the transformations.

Quadratic function that is vertically stretchedby a factor of 4 and shifted down 2 units.

Write the function given the transformations.

Cubic function that is reflected over the x­axis, shifted down 5 units, and shifted right 3 units.

Page 10: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

Write the function given the transformations.

Absolute value function that is reflected over the x­axis, vertically compressed by a factor of .25, shifted down 2 units, and shifted left 3 units.

The graphed blue function is the parent function. Describe the transformation(s) from the parent function (blue) to the 

function given (green). Write the equation of the green graph.

Page 11: Transformations of Functions - Coach Young Math€¦ · Transformations of Functions Transformations allow you to move a graph of a function into a new position w/out having to find

The graphed blue function is the parent function. Describe the transformation(s) from the parent function (blue) to the 

function given (green). Write the equation of the green graph.