Transformations of functions: Horizontal translations
Examples
Lessons

 Sketch the following functions on the same set of coordinate axes:
$y = {\left( x \right)^2}$ VS. $y = {\left( {x  6} \right)^2}$ VS. $y = {\left( {x + 5} \right)^2}$  Compared to the graph of $y = {x^2}$:
• the graph of $y = {\left( {x  6} \right)^2}$ is translated "horizontally" ________ units to the ______________.
• the graph of $y = {\left( {x + 5} \right)^2}$ is translated "horizontally" ________ units to the ______________.
 Sketch the following functions on the same set of coordinate axes:
 Horizontal Translations
Given the graph of $y = f\left( x \right)$ as shown, sketch: $y = f\left( {x8} \right)$
 $y = f\left( {x+3} \right)$
 In conclusion:
• $\left( x \right) \to \left( {x8} \right)$: shift __________ to the __________. All x coordinates $\Rightarrow$ ____________________
• $\left( x \right) \to \left( {x+3} \right)$: shift __________ to the __________. All x coordinates $\Rightarrow$ ____________________
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Topic Notes
Horizontal translations refer to movements of a graph of a function horizontally along the xaxis by changing the x values. So, if y = f(x), then y = (x –h) results in a horizontal shift. If h > 0, then the graph shifts h units to the right; while If h < 0, then the graph shifts h units to the left.
Compared to $y=f(x)$:
$y=f(x8)$: shift 8 units to the right
$y=f(x+3)$: shift 3 units to the left
$y=f(x8)$: shift 8 units to the right
$y=f(x+3)$: shift 3 units to the left
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