Consider line segment AB whose endpoints are (1, 4) and (4, 8). If this segment is dilated by a scale factor of 4 centered at the origin, find the length of the new segment, A’B’.

Answer

4

5

20

400

Question

Consider line segment AB whose endpoints are (1, 4) and (4, 8).  If this segment is dilated by a scale factor of 4 centered at the origin, find the length of the new segment, A’B’.

    Answer
    		

    4
    		

    5
    		

    20
    		

    400

anonymous · Answer

@amistre64

amistre64 · Answer

scale and pythag .... what do we get?  or pythag and scale since all linear parts scale the same

anonymous · Answer

um...I don't THINK they want us to use pythag...
I chose 20

amistre64 · Answer

pythag is the distance formula ....

anonymous · Answer

oh...yes then
I thought you meant the pythagorean theorem lol
but yes, they want us to use pythag then

amistre64 · Answer

20 is good to me.

if we move the points to the origin:

  1,4       4,8
-1-4    -1-4
------------
   0,0       3,4
                we get the obiquitous 3,4,5 right triangle

amistre64 · Answer

scaled by 4 we get 5*4 = 20