Which graph represents the function?
f(x)=x(x+2)
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Answer:
The bottom graph on the right, check the image below:
Explanation:
Substitute the x value with 1,
f(1)=1(1+2)=3
f(2)=2(2+2)=8
f(-1)=-1(-1+2)=-1
f(-2)=-2(-2+2)=0