Urgent geometry ! provide explanation if possible . bogus answers will be reported

If m is the midpoint between x=a and x=b, then you have

... (a+b)/2 = m

... a+b = 2m

... b = 2m - a

For the case where a=1 and m=6, we find the reflected coordinate to be

... 2·6 - 1 = 11

Now, we want to reflect about the line x=4, so a=11 and m=4. The second reflection results in an x-coordinate of

... 2·4 - 11 = -3

hope this will help you

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