Respuesta :

anishkon04
y=3 if x is 0

y=-1 if x 2

y=15 if x is -6
Plug in the domain values for x. 
y= -2(0)+3 y=3
y= -2(2)+3 y= -1
y= -2(-6)+3 y=15
your three range values are {3,-1,15

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