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1.1 Translations (Solutions).notebook September 10, 2015
Chapter 1
Function Transformations
What is a transformation?
A change made to a figure or relation such that the figure or the graph of the relation is shifted or changed in shape
1.1 Translations (Solutions).notebook September 10, 2015
1.1
Translations
vertical translation (examples)
y = x2 + 7
y = x2 4
horizontal translation (examples)
y = (x 3)2
y = (x + 5)2
A translation is a horizontal or vertical "shift" that changes the position of the original function, but does not alter its size or shape.
For Example: If the quadratic function, y = x2, is moved horizontally or vertically from it's original location, its equation changes as well.
Always inside the bracket(ie. inside the function)
Always outside the bracket(ie. outside the function)
1.1 Translations (Solutions).notebook September 10, 2015
1) Write the new function equation for each of the following after a translation of 4 units left and 9 units down.
y = x y = | x |
y = x2 y = x
y = x3 y = 1x
2) The original function and its translation are given on the grid below. State the equation of the translated function.
y = x2
a)
1.1 Translations (Solutions).notebook September 10, 2015
f(x) = | x |
b)
y = 1
x
c)
1.1 Translations (Solutions).notebook September 10, 2015
vertical translation (examples)
1) 7 up
2) 4 down
y = f(x)
horizontal translation (examples)
1) 5 right
2) 6 left
Translations can also be performed on the general function notation.
3) The original red function, y = f(x), and its blue translation are given. State the equation of the blue translated function.
y = f(x)
1.1 Translations (Solutions).notebook September 10, 2015
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