SOLUTION: evaluate each function rule for x= -2 f[x]=x-2 f[x]= 1/2x+2

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Question 30254: evaluate each function rule for x= -2

f[x]=x-2

f[x]= 1/2x+2

Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
+f%28x%29+=+x-2+
+f%28-2%29+=+-2-2+
+f%28-2%29+=+-4+

Not sure what you meant to write for the second one...it is ambiguous. You need to use brackets to collect terms together to remove the ambiguity. I shall assume you meant:

+f%28x%29+=+%281%2F%282x%29%29+%2B+2+
+f%28-2%29+=+%281%2F%282%28-2%29%29%29+%2B+2+
+f%28-2%29+=+%281%2F%28-4%29%29+%2B+2+
+f%28-2%29+=+%28-1%2F4%29+%2B+2+
+f%28-2%29+=+%28-1%2F4%29+%2B+8%2F4+
+f%28-2%29+=+7%2F4+

If you meant to write +f%28x%29+=+1%2F%282x%2B2%29+ then learn to use brackets more in your maths language and now you can do this one :-)... the answer is -1/2.

jon