The piecewise function for the graph is given as 
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.
For (-∞, -3), the line passes through (-9, 0) and (-3, 2), hence:
y - 0 = [(2 - 0)/(-3 - (-9))](x - (-9))
y = (1/3)x + 3
For (1, ∞), y = 6
The piece wise function for the graph is given as 
Find out more on equation at: brainly.com/question/2972832
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