If the center of dilation is at the origin, by what scale factor was octagon abcdefgh dilated?

Asked by maham237 @ 27/12/2020 in Mathematics viewed by 338 People

"Octagon ABCDEFGH and its dilation, octagon A’B’C’D’E’F’G’H’, are shown on the coordinate plane below.
If the center of dilation is at the origin, by what scale factor was octagon ABCDEFGH dilated?

1/4
1/2
2
4
"

Answered by maham237 @ 27/12/2020

For example look at the point A and its image A`:A ( 3, 1 ) → A` ( 6, 2 )The pattern is:( x, y ) → ( 2 x, 2 y )The same is with all other points.
Therefore the scale factor is 2.Answer:C ) 2

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